CFM - SCFM - PSI
       Compressor Flow Issues

the tools were working fine and it builds air pressure but now all the tools bog down so fast and essentialy wont run like they did   the tools were working fine and it builds air pressure but now all the tools bog down so fast and essentialy wont run like they did. I changed the hose ...

Can I find out what my cfm is?  I recently bought a used air compressor and know very little about them in general, but would really like to know what the CFM for this one is. I would ...

making a mask for spraying. - as my tube size enough?  l used to work in engineering and we used full face hard free-flow breathing helmets for blasting submarine parts, they ran from
a large 90 CFM compressor,...

Energy savings from relocating Air Compressor  Hi,

Is there a way to justify the energy savings by relocating air compressor. If so could anyone please advise or guide me on how to approach the case....

bypassing tank  Hello Bill,

I'm pretty sure this will be an easy question to answer, and thanks in advance for any assistance...

I'm working on an sculpture for ...

I'm buying a spray gun that requires 7-12 cfm my compressor is 14 cfm is this ok  Does the guns requirements for 7-12 cfm matter if my compressor is 14 cfm

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Bill says...

Hi Dan.

A piece of info that is ...

Machine air consumption  Hi Bill,

How to calculate machine air consumption which is use 6 bar pressure
and can u give me the sample calculation.

Thank.

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Hitachi 6 Gallon pancake compressor for air tools.  I have a Hitachi 6 gallon air compressor. I bought this compressor for framing with a nailer. The manufacturer says not to use with mechanical tools such ...

Compressor output at different pressures?  Why do compressors have higher flow rates (SCFM) at lower pressures? There is more air inside the tank at 90psi than at 40psi. Opening a line of given ...

what is the standard air consumption of a particular quality weaved on air jet loom?  I have airjet looms

I need to know the cfm consumption of a specific quality on my airjet loom. I have cfm meter but I dont know the standard consumption ...

CFM and Bar pressure for shot blaster  Hi, I have a shot blaster which says it needs 125psi to work.

the compressor powering it is 10 bar with a 5hp motor and 300 ltr tank.

When i am shot ...

HP fittings  can we use 1/4 inch ss tube as the out put of a 12 cfm high pressure compressor?
or we have to change our line to 3/8 inch?

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Bill ...

MY SANDPOT LOOSES AIR PRESSURE TO EASILY  I USE A 200 LITRE HONDA 13HP PETROL ENGINE COMPRESSOR TO FEED MY SANDPOT FOR SANDBLASTING,GIVING ME 150PSI,.,.MY SANDPOT LIMITS AT 125PSI,AFTER A MIN OF ...

Pipe Sizing for a given cfm @ a given psi  We currently have two 60hp compressors producing a combined 429cfm @ 125 psi being supplied by 2" NPT.

During our highest air consumtion periods, at ...

low pressure high CFM  I need 200 CFM @ 3 to 8 psi to feed air stones in my indoor food garden. what size compresure will i need to run the stones 24/7

the stones are fed ...

Problems with line pressure  My new compressor is 3.5hp 6 gal double stacked tanks with a rating of 5.3 cfm @ 90 psi.

I have a coil roofing nailer and 1/2" impact driver.

If ...

calculating cmf output at various pressures  I have a 7.5 HP, 80 gal tank air compressor. The discharge at the equipment is 3/4" (F)NPT. It is rated to discharge 24 CFM at its MAX pressure given ...

energy efficiency of different compressor designs  Are screw-type compressors significantly more energy efficient than piston compressors?

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Bill says...

Stephen. How long is ...

I need to know how much air I am loosing through open air jets  What would be the SCFM of air through a 1/16" tube at 90PSI?
The tube is about 6" long

Thanks

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Bill says...

Dave, read ...

Is it possible to replace a single stage pump with a two stage pump?  Hi-
I have a 60 gal vertical IR 5hp single stage compressor.

I’m seeing if it’s possible/good idea/feasible/etc to replace the single stage pump ...

CFM for portable Emglo compressor spray gun application  I have an Emglo 4gal-twin tank portable air compressor (M79-HC4) I want to run a LVLP gun, rated 8-10 CFM.

The compressor specs say 4cfm @100 psi, what ...

How small can an air compressor be?   Hello, I am doing research about air brush make up compressors. One brand name Dinair, have a small compressor of its own. I was wondering is it possible ...

air pressure problem  an old Sears single stage air compressor. the gage on the tank reads 100. and it will start to refill at 90 psi.

We added a pressure regulator to ...

how many hp do i need to drive a compressor head?  I have the "head" from a old compressor. It is conplete with drive pully and if I rotate it by hand it looks ok and is compressing the air on the outlet....

I need Speedaire 4GNN1 Auto Drain Instructions  I bought this Speedaire 4GNN1 Auto Drain for my Air Compressor, but it is not obvious how to hook it up. There are 2, 1/2 inch holes, and only one 1/...

Can I operate caulk gun from scuba tank?  Air powered caulk gun operates with 30 psi compressor. Each time the gun trigger is released, an average of .3cf air volume is dumped from the gun.

I ...

CFM vs PSI  Bill

I bought & enjoyed your book.

I could not find an explanation of why CFM appears to be inversly proportional to PSI. My vacuum press requires ...

Can't air up my motorhome tires with my compressors.  I have 2 (nominally) 125 PSI air compressors. One is a 5 gallon, 2 hot dog variety and the other is an upright 12 gallon style. Both work great at running ...

Champion R15B Compressor Pumping Air Slower Than Rated Capacity  I have recently mounted a used Champion R15B compressor to an 80 gallon tank. It has a 16.5 inch flywheel and is attached to a 5 HP 220 Volt motor spinning ...

Need to convert cfm to Nl/min  Need to convert 2 cfm to Nl/min. Can you help me with the answer or does this make any sense?

Thanks

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Bill says...

Charlie,...

how to convert bar to cfm ,  i am planning to install a new shop ..... where i have several machines ... all have given their cfm values and 6 bar press requirements ....... how to ...

Air flow diagram for Atlas Copco comrpessor  Dear Sir
I am a mechanical engineer ,manager of Auto maintenance dept. in a cement co. in Egypt,I ve Mobile compressor atlas Copco XAH 350,i am facing ...

what is the diffrence between 105 cfm & 92 cfm?  i want to buy air compresser with 105 cfm & 200 bars pressure. My contracter has offerd me 200 bar HP compresser with 92 cfm. How di evaluate his proposal?...

The proper speed that a compressor should run.  I have an old upright compressor and the motor burnt out. I bought a motor to replace the old one, but, the new motor runs at 3450rpms. I think that the ...

PRESSURE!  GUAGE ON COMPRESSOR IS READING PRESSURE BUT NO PRESSURE AT THE END OF AIRLINE



Bill says...

Howdy. You don't provide much info, so I can ...

Can I increase the CFM output of a belt driven compressor by changing the RPM of the pump?  I have an old compressor (probably 1930's) & I am putting new rings in it to hopefully eliminate a small oil leak in the cylinder that creates a milky/...

compressor cfm calculator  I have a plastic welder that needs airflow of 4 psi at the 1/4 inch wide open nozzle outlet.

What size of standard compressor do I need to continously ...

Will a hvlp spray gun work with my air compressor?  The Specifications: I have a Devilbiss hvlp spray gun that has 30 psi inlet pressure deliver, 10 psi air cap pressure, and a 13cfm air volume. But my air ...

CFM vs Pressure  I have been thru ur site and learnt that increasing pressure means decrease in cfm and vice-versa but it seems there is no direct factor(number) of relation ...

Brad nailers and SCFM  I recently purchased a small 2 gallon compressor capable of 100 PSI but the SCFM at 90 PSI is a mere 0.7.

I have looked at several brad nailers and ...

Does 2 hp compressor equal 8 cfm?  Hello I have been reading through your site trying to find information that will help me purchase the right air compressor.. from reading your info I think ...

Is it a Manifold or a Air Receiver?  We have built in house several small (1 - 2 gallon) air holding tanks used as a manifold to supply our air tools. The small tank is built from a 5-6" steel ...

How Much air do I need to pump in/out of compressor room?  We are setting up a 5x6x10 ft room for our 5hp/60gallon tank compressor. What is the proper size of fan/ventilation we need to keep the room cool and ...

Tank size question.  Does tank size have an effect on the amount of available cfm.



Bill's simple response...

Yes!

Bill

What do I need to calculate CFM of a system?  I know the size of the compressor, the size of the piping, and the system pressure. How can I calculate the maximum CFM going to a tool, tank, or valve ...

Air actuators / plumbing issue  I was wondering what kind of an actuator i would need to shoot a twinkie out of a eight foot long piece of pvc pipeing?



Bill answers...

So ...

CFM throttling down.  Is there a way to take an air compressor that is rated for 5 cfm @ 90 psi and reduce it to 2.5 cfm?



Bill answers...

Hello Don, nice to hear ...

Compressed air in a tank. How long will it last.  If I have 2,000 lbs of compressed air and I'm blowing off 35 lbs How long will that 2,000 lbs last me? Hours and minutes Please. xangolenny@hotmail.com
...

Minimum hp to create 6 cfm  I try to create a 100LPM suction pressure in my lab and I know 1 cfm is equal to 28.32 LPM.

However, I do have a 2hp compressor in the lab but the ...

Increase speed and CFM on older air compressor?  I have a old air compressor the tank says Kargard co on it (it is in excellent shape no rust).

It seem to be about 30 gallons 16 x 36 x 18 high.

The ...

How large does a port need to be to admit 12 cubic inches of air @ 14 bar at the speed of sound?  My tool uses ante-chambers and limited "open" ports.

Assuming an inflow port is open for one-4000 sec, how large must the port be? How does one compute ...

A question about air velocity and compressed air flow.  What is the maximum permissible velocity or air flow through different sizes of piping?

Is there any tables or ways to calculate the maximum permissible ...

What's the difference between CFM and SCFM?  My air gun uses 12-14 CFM.

My compressor puts out 8.8 SCFM @ 90 psi.

What's the difference?

Compressor horsepower  I am looking at purchasing a new air compressor. I have a question as to how the horsepower is rated. I have found similar compressors with equal CFM ...

Increasing CFM by adding a compressor.  Can you run two identical 5.3 CFM @ 90 PSI units to generate 10.6 CFM at the same PSI?

Relationship between PSI, CFU, HP, tank size  I am very unclear on the relationships between PSI, CFM, HP, and tank size. I suppose that everything else being equal, a given PSI will be maintained ...

i want to calculate air flow of my compressor  HW TO CALCULATE AIR FLOW FROM COMPRESSOR
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Bill says...

Arvind, the rule of thumb that I use is that you will get about 4 CFM ...

Compressor cfm!!  We have a compressor which operates at 350 psi. Can you tell me at what CFM does it work!!! how to calculate the relation between pressure and air flow ...

185 cfm at 175 psi  I have a machine that requires high pressure at 185 cfm but the retailers only tell me the compressor they have provide 175psi how do I know if this compressor ...

CFM's & pex?  How many CFM's will a 20 ft. piece of 3/4 inch pex support?

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Bill says...

Howdy visitor. Are you asking how much compressed ...

Hermitic compresor - How to Calculate CFM  Dear Mr.Bill
Thanking you for your replay. The Hermitic compresor specifications are as follows, I need Minimum 3CFM air flow rate, they didnt mentioned ...

Porter Cable compressor size versus spray gun size  I have a 6 gal,150 psi Porter Cable pancake compressor. No hp stated. power output of 2.6 scfm @ 90 psi. I am looking at a porter cable hvlp spray gun ...

A lot of miss information, cfm of air eqivilant to gpm for blowing out pipes and sprinklers?  In purchasing a compressor to blow out pipes and sprinkler systems , the comparison of cfm to gpm is a question always asked, what size compressor do in ...

tank has pressure but nothing comes out of hose  There are 2 gauges...it appears that there is 60lbs or so in the tank but zero on the other gauge. Am i doing something stupid? or is there something ...

calculate the air consumtion  i want the formula for calculate the compressed air which is coming from compressor.i have a hose pipe diameter and pipe inside pressure.i want to know ...

Calculations to push water from a cylinder reservoir  I want to use air to push water from a cylinder reservoir through a pipe to a certain height.
Is there a simple formula to work out how long it would ...

cfm vs psi  Is there a general way to determine a new cfm for a desired psi? Example: If I have an air compressor that puts out 8 cfm at 120 psi, but regulate it ...

I want to increse my compressure presure from 145psi to 200psi  I want to increse my compressure presure from 145psi to 200psi 60hp - 238cfm - 145psi

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Bill says...

Rajesh, if the air ...

How to explain to a person who is not technical the relationship between air pressure and CFM?  I work in an air jet weaving facility so we use air to force weft across a loom to manufacture a product. I'm trying to explain to a non technical manager ...

What is the difference between CFM's and SCFM's and how are the measurements different or are they the same?  I just purchased a few pneumatic nail guns and was told by the manufacturer that they require at least 4 CFM. Today I looked at compressors ( 2 & 3 gal)...

Air hose length...  Does the length of the air hose make a difference?

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Bill says...

Bryan, sure it does. I've written an answer here:

http:...

How do I get more pressure to fill truck tire to 120 psi?  I have recently ourchased a new compressor.

Twin piston, oil base. It is supose to develope 125psi at max.

I am typing to fill truck tires that ...

Air brush compressor  If an airbrush compressor is rated at .75cfm at 50 psi, what cfm does it produce with regulator set to 30 psi?

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Bill says...

Excellent ...

air compressor applications  If I have an oil free air compressor and I run the out put line to an air/water separator, can I hook it up to a full face breathing apparatus?

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me want to calculate the total cfm of my compressor?  it's an centrifugal air compressor...in it company mentioned 9000 Nm3/hr @ 9 kg/cm2.
Now we using @ 8.5 kg/cm2 full load for 10 hour in a day...
So me ...

Max psi on 20 gallon garage mate air compressor ?  I have a 20 gallon garage mate air compressor and i was wondering if i can turn up the max psi cut off. Puma makes a 20 gallon air compressor that looks ...

compressed - air dryer for car wash services ( How many air is needed to dry car after washed in 3 mins ?)  Dear sir,

I intend to start a car wash services, You know if you wash your car from a petrol kiosk, if more air is supply to dry car after washed in ...

force at pipe of 0.25cm2 for a tank with 550 kpa  i want to know that how much force will exert when i will open the tab of a compressor where it connected to a pipe of area 0.25cm2 .

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I have two stage compressor and want to know the size   Hello Bill I have two stage compressor and want to know the size

It has a tag 4-1/2 2-1/2 4x2 it is copper and what cfm is putting out

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how match cfm produce 10 hp compressor  how match cfm produce 10 hp compressor

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Bill says...

Andrei... each air compressor with the same electric motor HP will have ...

(Air Flow) Arif low requirement  What is the air flow requirement in CFM to have pressure of 15 PSI

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Bill says...

Good question. In response to the many folks ...

pump size on a 100 gallon compressor  Hi , Im going to look at an air compressor tomorrow,All i know is its a 100 gallon tank with a baldor 110 volt motor,The guy told me he thinks someone ...

want more cfm  i have 2 extra compressors sitting in a corner of my garage, and i want to get more CFM...
my current compressor is a 3 HP, 18 gal
i want to run about ...

I want to buy a compressor that will deliver 105 psi to RV tires.  I need a more or less portable compressor 110V which will deliver 105 psi to RV tires. What should I buy? I do not know how to correlate SCFM to PSI ...

is there such a thing as "acceptable" leakage from an old compressor  I bought a 40+ year old compressor (oil. It runs fine, but there is a slow leak that I have not been able to find. It fills to 120 and with nothing attached ...

air compressor for spray painting  First time and I had already an air compressor now, and I'm planning to use is for spray painting in my room and my motorcycle.

Asking for this regarding ...

i want to find the cfm of a compressor  7 inch is dia of cylinder,5 inch is stroke length, piston rod dia is 2 inch, rpm ic 650 and efficiency is 70%.

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Bill says...

Hello ...

high pressure high CFM - can I get this?  I want a compressor with 200 Psi and a flow rate of around 250 CFM....Can i get one like that?

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Bill says...

I don't think that ...

No air will come out  The motor runs, and pressure builds, but no air will come out. When I hook up the hose, it makes no noise. No air pressure is getting to the fittings....

Compressor Load PSI vs CFM  If a given compressor is say rated at 30CFM at 90PSI and say 20CFM at 130PSI but no more than 90PSI is required; will the best gain in efficiency be attained ...

compressors size and flow  I don't understand the relationship between CFM vs tank volume ...I'm looking at a dewalt heavy duty 15 gal, which delivers as much CFM as a Husky 30 gal?...

03 screw compressors 63 kw each , running in paralell generating 8.5 bar pressure each and coupled with each other by 2 inch pipe but low pressure at delivery end?  i have 03 screw type compressors , each fitted with 63 kw motor generating 8.5 bar pressure. These 03 compressors are connected with each other though ...

Cfm of compressed air with related to pressure  Let us say 300 cfm @ 6 bar compressed air is allowed to pass through a Pressure Reducing Valve and the outcome pressure is 2 bar. Will the volume be triple ...

MPA and LPM  I'm trying to figure out how 0.12 MPA compares to 0.3 LPM for air flow. Two research projects used these measurements for their airflow meters. Any ideas?...

new volume formula for air at different pressures  what is the new volume of 3 cubic feet of gas at 25psig if it is compressed to 40psig

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Bill says...

Interesting question. It'...

Converting flowrate/pressure ratings.  I have a compressor system rated at 127.2 scfm @ 100 psi working pressure. I have a regulator to step down this pressure to 50 psig in this same piping ...

air compressors actual cfm. .. anyone have a formula?  i have one reciprocating air compressor of 7.5 hp.the actual cfm of this compressors is 20.8 cfm @ 10 kg/cm2 pressure..this compressor is run in my plant ...

Too much pressure ... tank would explode  How much pressure before tank would explode

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Bill says...

The compressor system PRV's should release before the pressure ...

Tubing vs pipe  If a want a 25 scfm flow from the valve is 1/2" npt schedule 40 pipe can I get the same flow from a 3/8" stainless steel tubing line?

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Pressure Dew Point Measurement reading  During measurement of Pressure dewpoint of compressed air system where in the Dryer is designed for -40DEgC ,what is the expected dew point at 7Kg/Cm2 ...

Compressor builds pressure but doesn't put out much air flow.  I have a Sullivan diesel compressor 185 CFM. The unit starts, runs, builds pressure. When I open the main gate valve off the compressor where you hook ...

Compressor psi  Hi I got a hotdog style compressor and all the labels on it are off. I just wanted to know if there is a certain psi that it should be ate when it is filled ...

Compressor Won't Fill Tires  I have a 1 HP Sears compressor. Although the gauges will show in excess of 100 psi, when I attempt to add air to car or bicycle tires, the air doesn't ...

Using compressed air to dig dirt  I have seen air used to dig around big trees to remove and replant the root ball. Both the Air Spade and Soil Pick brands use a huge pull behind generator....

Inflating flat tires from air tanks  I'm planing on buying a 3 gallon 100psi oil less pancake compressor. I'm going to use it to fill up tires of different sizes. These will be on trailers ...

Iconversion of units  I have a spec that calls for a service air compressor Design temp 50° 8.3 bar 2300 Nm³/hr and need to know what this is in SCFM

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to open screw at car tyre  im decide to use air gun to open my car tyre but i dont know how many horsepower for it

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Bill says...

Criss, you have to know ...

What compressor do you use for piping?  What type of air compressor? To remove water through pipes

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Bill says...

Aaron, the water in the pipes doesn't care what brand ...

what hp motor required for 2 stage compressor pump connected to packing machine  would like to know what horsepower motor required for compressor pump connected to packing machine of 5 tph capacity.

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Bill ...

running a spray gun  im going to be painting my truck and am trying to figure out if my little compressor will work or not the compressor is rated at 7.7 scfm @40 psi and its ...

Can a compressor be remote mounted from the tank without losing performance?  I have a setup where I have a storage shed behind my garage. To save on noise and space I want to mount the compressor in the shed, and pipe that into ...

is it possible to create a higher CFM rating on an air compressor?  I have an air compressor with a rating of 4.1 CFM @ 90 PSI. I need an air compressor at 5.4 CFM @ 90 PSI. Is there a way that I can make this compressor ...

Is there a calculation to change your CFM if you reduce the PSI?  I have a piece of equipment that requires 291 cfm @ 12 psi. If I regulate my 90 psi output down to 12 psi, what is my cfm @ 90psi?

291 cfm @ 12 psi ...

Hi, I am suppose to design an airlock for my school project  I am supposed to design an airlock entry system for a mine refuge vehicle. I realised that the air flow rate needed to purge the airlock chamber needs ...

air requirement in cfm to fill an air chamber for an autoclave   I have two 550 gallon air tanks that are used as buffers to pressurize an autoclave with a volume of about 2000 gallons to 80 psi. The factory where this ...

sandblasters need how much air???  what do i need in line from air compressor to sand blaster?

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Bill says...

About twice as big as a piece of string? :-)

No ...

rotary screw air compressors - output depending on RPM  if a compressors is rated for 1800 rpm gives 21 cfm, what will it do at 1200 rpm?

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Bill says...

I don't know if the production ...

airflow due to pressure difference from room to room  how to calculate the flow of air through an door opening between a rooms one at 40 pascal pressure and the oher at 20 pasals.

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Bill ...

Need to know what size of flow meter to use with a 185 cfm air compressor  We have a 185 cfm, with a rated pressure of 100 psi, and we need to know what size of flow meter to use to be able to measure the air flow accurately.

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Conversion  How many psi do I need at one end of a 6" pipe to get a flow rate of 200 fps?

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Bill says....

Hunh??? FPS is a measure of ...

what pressure would i set my discharge to...  Loomis commercial dryers - what pressure would i set my discharge to on compressor for an comercial dryers air jet solinoid

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CFM's & force  how much force is 100 CFM's

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Bill says...

Hey Casper, let me ask you a question in response?

How much force does 50 MPH exert?...

COMPRESSED AIR  Pls tell me what will happen if the supplied CFM is less than the connected CFM?

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Bill says....

What??? I win the lottery?

Seriously,...

work of aircompressor of 185cfm of 150 psi  i need to the work of the above mention,i mean the type of jobs that the above can be used for.

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Bill says...

Ola, this ...

Volume at different PSI  If i have a compressor that makes 10 SCFM at 100 PSI. On an 80 gallon air receiver. would i be able to take 20 CFM out at 30 PSI.
If not -- how much ...

maximum PSI - 2hp 77L/min air compressor  I looking at buy a 2hp 77L/min air compressor and need to know the maximum psi it can pump out ? ill be using this compressor for pumping high pressure ...

no contant air flow  when i let air out it does not keep air stay steaded in the tank

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Bill says....

Nelson, if you are asking a question as to why your ...

Air Compressor ~ storage volume blowing down from 200 bar  i need air storage volume blowing down from 200 bar to 160 bar in 300 seconds with 0.8Kg/S massflowrate.What should be the size of storage.Also suggest ...

how can I determine the value of free air delivery of an air screw compressor element if it's attached for example to a 500 liter tank.  I have an air screw compressor but I don't have any technical specification
I want to get it by experimnet
thanks a lot.

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Bill says....

Will a restriction in my air system over only 3" slow my pumps down  I have an 1" bore pipe 3 metres long feeding two pumps in the pipe is a restriction effectively reducing the bore to 1/2" over a 3" length

The two ...

CFM Calculation  I want to know the perfect (Thumb rule) caculation about the CFM calculation to fill a 70 Ltr blowo moulding part at 8 kg/cm2 pressure how much CFM we ...

How many cycles can I get with a certain size tank?  I have an application where I need to actuate a cylinder with an air tank, not a compressor.

I need to size the tank appropriately, meaning using the ...

a hire compressor is constant 75 and others100 psi/bar  i run an Impact mole from hired compressors, a job was in sandstone and it refused to budge and im wondering was it just the hard ground or was it because ...

the hose connector will not stay plugged into the compressor  the hose connector will not stay plugged into the compressor

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Bill says...

Hi Al. If you read both the COUPLING and CONNECTOR ...

compressed air - how many cubic feet of air  If I have a one cubic ft air tank and the compressor forces in more air and raises the PSI to 10 pounds how many cubic feet of air are needed to do this....

Time required to fill the air receiver & Number of cycles of acuator  I have got 14 bar pressure line available to fill the receiver. Size of receiver is 40 liter. how to calculate time required to fill the reciever at 14 ...

Rigid compressor has low outlet pressure  My rigid twin stack builds pressure. It also shows adequate pressure at the outlet until I attach the hose. Then it drops significantly and very little ...

hpa 48ci/3000psi tank filling from scuba refill station  I have a 48ci/3000psi hpa tank I use for paintball. I refill that tank using a 80cf scuba tank 3000psi with a scuba tank refill station. My question is ...

presser but not enought flow??  I have a 5hp motor running a twin cylinder compresser head,it gives me 125 lb of pressure and my regulator is set at 100 lbs.But wont run my impact to ...

Drying the bottom chasis of car using air compressor  Our client has requested us to design a compress air system using network of piping and appropriate nozzles to dry bottom chasis of commercial car after ...

cost of regulating compressed air at 100 psi down to 12 psi.  I am trying to decide weither useing compressed air is less exspensive than using a PD blower. I need to figure out the losses from regulating down from ...

cfm @ 90 psi with 3/8'' line vs 1/2" line  cfm @ 90 psi with 3/8'' line vs 1/2" line

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Bill says....

I'm not quite sure what your question is. If it's related to flow through ...

Check Valve - will it work or not?  I want to add a reserve tank. I have several 3/4 inches check valves used in plumbing water. Would this same valve work with air or do I need a special ...

Need 300 psi with very little cfm  I need 300 psi for calibrating several different devices at work....I need very little cfm....I need to use a regulator to scale from 0psi-300psi. What ...

i have 80 cfm screw compressor i need to regulate down to 25 cfm 90psi   i have 80 cfm screw compressor i need to regulate down to 25 cfm 90psi

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Bill says....

Brian, you will want to install a throttle ...

cfm through slotted oriface at 50 psi  i have an air knife i am with an 8" by .0325 oriface (slot. i am trying to find out how to calculate the acfm at 50 psi. i would like the formula in a ...

lack of out let pressure  small draper compressor. will build tank pressure and shut of at approx 125 psi all fine. on trying to use a blow gun, there is an instant burst of pressure ...

How much cfm can I get through a 3/8 air hose?  I need to know if I can run my 1" impact gun with my 3/8" air hose. I have a big 13hp 30gal air compressor that supplies 175 psi. The original outlet is ...

compressed air volume  I use compressed air to pump water.
If I have a container of say 10 cubic feet of water, 30 metres down a bore,
how many cubic feet of compressed air ...

is 90psi equal to 2000liters /minute?  is 90psi equal to 2000liters per minute of air?

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Bill says....

Nope!

90 PSI is an indication of the force the compressed ...

How much SCFM through 10 mm pipe  How much SCFM through 10 mm pipe

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Bill says...

Always a good question, and almost always, not enough info to give a specific ...

compressor recycles when pressure is too low  Hello

I have a Ridgid ol50135w air compressor. The unit will not recycle until pressure is down to 70-75 and I can not drive framing nails. I have ...

coleman black max - discharge air hose is too hot  the discharge air hose is overheating. to hot to touch.

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Bill says...

The discharge air from the pump to the compressor ...

How to calculate CFM of a double stale air compressors at 180 PSI  I want to know that how we can calculate the CFM of the air compressor at different pressures.

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Bill says...

Vinay... so ...

Compressed air blower gun  I'm using a compressed air blower to clean my machine and its limited to 30 psi os 2 bar, how much CFM will it need?

________________
Bill says...

Ian,...

Slow pressure buildup in three cylinder compressor  I have a three cylinder compressor mounted on a Kargard horizontal tank powered by a 1 and 1/2 horsepower Leeson electric motor.

We have the motor wired ...

Enough Compressor?  Hello,

I bought a HVLP spray gun with a range of 29 to 50-PSI @ 4.2 to 7.1-CFM. My air compressor will deliver 2.6 SCFM @ 90 PSI.

I am painting small ...

air tank and HPLV paint gun question  I want to do some refinishing work(guitars) in my basement but do not really want to use a compressor due to the noise issue. I was looking at using an ...

is BAR more then PSI?  is BAR more then PSI?

____________________
Bill says...

Hi there Victor. Now that's a good one. Thanks.

That is akin to asking if Fahrenheit ...

Compressed air plumbing question - how big a pipe  Looking for branch piping size to supply 170 CFM approx. 250' from a 6" main with 100PSI

_____________________
Bill says...

Clarke, what you really ...

How to increase cfm of compressor  I've got a small 1.5HP, 6 gal, 2.5 CFM pancake Husky air compressor. That's below the specs for most nailers. Could adding another 5-gal tank almost ...

I am installing an air compressor and wonder if the length....  Does the length of the air hose make a difference on the effectiveness of the compressor.

____________________
Bill says...

No Dar, the compressor ...

COMPRESSOR HP / and compressor flow  what would be motor rating of a compressor capable to deliver 25 cfm at 12 psi

____________________________
Bill says...

I keep looking, but I have ...

My compressor runs my impact wrench but the air ratchet just blows air out of the side.   I have a porter cable 150 psi, 6 gallon compressor that delivers 2.6 scfm @ 90 psi. My air ratchet runs at 4cfm @ 90 psi. The compressor seems to run the ...

BLOW AIR CALCULATION  i want to know the calculation for air in litter or cfm for blow any kind of PET bottle. some one gave me the formula for this but i can not understand....

webster 35 pump max rpm  What is the max rpm for a webster 35 compressor pump. I just got a compressor without the electric motor. Thank you

____________________________
Bill ...

filter and regulator sizing  I have 3 air outlets for my home garage. I ran 3/4" copper pipe for the supply, dropping 1" every 10 ft.

My compressor is a 7 1/2 hp, twin head, producing ...

CFM AT A SPECIFIC PRESSURE  If compressors are rated at the no of cfm at a specific pressure, then what is meant by free air delivery?

____________________
Bill says...

I ...

MEASURING AIR PRESSURE  Lets say you have an air tank system and it is set at 90 psig.

You use an air nozzle 3/8" diameter with a valve on it and a calibrated gauge.

With ...

would I put a smaller or bigger pulley on the motor to increase pump output?  as above

____________________
Bill says...

You can put a larger pulley on the motor, or on the pump.

Since it's your compressor, feel free ...

would I put a smaller or bigger pulley on the motor to increase pump output?  as above

____________________
Bill says...

You can put a larger pulley on the motor, or on the pump.

Since it's your compressor, feel free ...

manually operated compressor  I am Mukesh Dave working on a project "Manually operated water cooler"
In that we have to achieve around 200 psi from 79 psi,
I met around 50 people ...

My compresssor will build up to 120 psi, then when I attempt to use it there seems to be nothing there no cfm will not even air up a tire.  I have a small 15 gallon 3hp craftsman compressor, I received this almost new as a house warming gift from my grandfather. The unit will turn on and build ...

What size air compressor do i need to blow out sprinkler lines....  I am thinking about working as an independent contractor doing home preservations.Part of the task is blowing out the water lines inside the house so they ...

how much cfm through a 3/4" pipe  How much cfm can you have through a 3/4" pipe at 100 psi pressure?

____________________
Bill says...

Doug, check the pages on pressure drop. There ...

Bubbling docks in a marina in the Mid West  I am currently employed by a large marina in Michigan, and in the winter we protect our docks from ice damage by bubbling the poles with compressed air....

CFM VS Pressure  Hi!

Great site, lots of useful info for rookies like me :)

I need to know how to convert CFM at one pressure to CFM at higher pressure, i.e.

I ...

not getting the power I need  My problem is, I am on my 2nd staple gun and still getting less than spectacular results.

my first one was a cheapo that needed 70-110 PSI and 4-6 ...

Need to size a double acting cylinder to the required air compressor   hi i need to size a double acting cylinder to the required air compressor.

but the pump specifications they gave is CFM @ 40 PSI: 5.0

CFM @ 90 ...

How many refills would a 48/3000 HP Air tank give you for a paintball gun?  HI
My name is Gagan and I was looking to buy a paintball gun and I wanted to ask you how long do the hp tanks last which have compressed gas in them ...

Questions on Easton compressor running too much (cycling too often)  We have an 20 HP Eaton compressor that is connected to 120gal receiving tank, then the air dryer.

The set points now are between 95 and 110psi. They ...

cfm - how much needed?  how much cfm to change a tire?

_____________________
Bill says...

Andy, you can get a very small, 12 VDC air compressor, that puts out a fraction ...

Quick discharge of air from compressor  i turn on the air compressor until it automatically shuts off at it's max psi. when I discharge the nozzle (sand blasting, pumping up a tire, etc), the ...

AIR COMPRESSOR (too big, too small?)  i have 600cfm air compressor, at 90psi. the prime mover is 120hp motor screw type.when we started this get loaded within 25 minutes and unloaded within ...

cfm in a 1/2" copper pipe  How much cfm will run in a 1/2 inch copper pipe at 120psig?

________________________
Bill says...

Tons of air, Andrew. A 1/2" copper pipe is ...

Air compressor at 2.6scfm  Hello
I recently bought a porter-cable 2.6scfm 6gal tank compressor 150 psi tank .black friday i saw a air tool set for a unbeliveable price so i got ...

what is max air flow in a 3 in pipe at 45 psi  need to know air flow in a 3 in pipe at 45 psi stright pipe no turns

____________________
Bill says...

There is no specific answer, without having ...

formula for compressor cfm and motor hp  what is the formula for compressor cfm and motor hp

_______________
Bill says...

Hi Mohan:

It's generally accepted that, in compressors over ...

power mater 27 gallon  my compressor is just over a yr old it is not used a lot or for long periods of time it recently started this problem of not having much out put of air ...

CFM PSI Relationship   I was wondering if anyone knows the specifics about how how PSI affects CFM flow (when it comes to air, anyway). I imagine as PSI increases, the CFM through ...

siameseing two air tank (putting two tanks together)  i wondering weither i should be concerned about the line size used to connect the 2 tanks.

_____________________
Bill says...

Hello Peter.

Yes,...

Air compressor SCFM  I just picked up this compressor. http://buy1.snapon.com/catalog/item.asp?store=snapon-store&item_ID=68270&group_ID=13098

This page said 7 scfm at 125....

How do I figure CFM delivered @100 psi on LeRoi 3 Phase compressor?  Hello,
I was left a LeRoi 3 Phase Air Compressor. Now I am trying to sell it. I have gotten a lot of information on it and have someone interested. Obviously ...

Air flow  If you have a compressor that is a load/no load compressor and it cycles to often and breaks belts, power consumption is not an issue, is there a automatic ...

Air flow from a tank  i am required to produce 2
SCFM @ 60 psi for intermittant short use, would i be able to acheive this using air
delivered from a reciever tank of say ...

max psi compressed air  Hi...can you tell me the maximum psi attained for compressed air?
I've seen aramid fibre tanks claiming 35,000psi capacity, but have never heard of any ...

Will my air tools run with 100 feet of hose.  Hi,

Firstly what an informative site, im new to compressorsd and what i have learnt reading through the site has been amazing.

Anyway back to my ...

Screw type compresser (needs to be emptied each night to start?)  Do you have to bleed all the air out of the tank at the end of the day when it is turned off?
I've been told you due otherwise the motor will not start....

the tyre pressure gauge reads..  just send the answer to my email add this is my email add hisuka_sakuragi@yahoo.com

______________________
Bill says...

The purpose of this posting ...

how to caluculate the air flow capacity for any machine  compressor needed for running 1cnc machine at 7.5 bar pressure
volume(flow of air not known)

_____________________________
Bill says...

If you ...

Air hose constrictions...by design  Why are 3/8" air hoses with 1/4" end fittings designed with a restriction of 1/4" I.D's on each end?

1/4" NPT fittings have a nominal O.D of over 1/...

how much air in a two gallion zip lock @ 30 psi  how small of a container would i need to hold that air

__________________
Bill says...

I don't know what you mean by a zip lock?

In terms of ...

Creating a Compressor for An Airbrush from scratch  I have resently been tasked to come up with a design for an airbrush compressor from scratch. I am not sure really where to start and was hoping that you ...

Can I run an air nailer with my 5.1 iron horse air compressor  Can I run an air nailer with my 5.1 iron horse air compressor.

_______________________
Bill says...

Hello G. Harlow.

When you say yours is ...

Air compressor kicking in and out ~ not enough air  Hello. I hope you can help me. Ive got a 3hp. 150l compressor.

it wont run any of my tools. air drill. little grinder.

if i let it build up to ...

Air leak  My compressor loses about 15 pounds of pressure over night. Its brand new and i left the air in it to see if would leak down. Is it ok to leave the air ...

What is CFM and how much I need for 2 simultaneous dental users  1.5hp dental compressor: it is very slow to fill with air and despite being off and full of air, at next day It will be 20.

______________________
Bill ...

Conversion from Nm3/h to m3/h  What is Mm3/h

_______________________
Bill says...

I don't know what "Mm3/h" is.

I believe that M3/h is cubic meters per hour.

Anyone else ...

Cu ft at different psi's  If I have a compressor that generates 4 cu ft at 4000 psi per min how many cu ft per min does this = at 100psi per min? Is there a formula I can use, thanks....

Volume calcs ~ calculate air flow capacities  Trying to calculate air flow capacities through a side inlet drilling swivel. Have a 1" dia x 12" long airflow spindle with (3) 5/8 diameter inlet holes....

Verification compressor capacity  Hai,
I am a validation specialist in a pharmaceutical industry. As a part of validation, I want to verify my new compressor capacity. My designed capacity ...

Blow out in-ground pool lines and equipment   What size compressor would I need to blow out a standard 16 ft by 32 ft in ground pool? I was told I don't need a a lot a hp but one with a lot of air ...

INCREASING THE CFM  I HAVE TWO SMALL HOUSEHOLD COMPRESSORS. BY FEEDING THEM BOTH INTO ONE LINE AM I INCREASING THE CFM.

___________________________
Bill says...

The ...

Humidification / Sprayer CFM  Bill

I have an application requiring continous flow to a humification nozzle or sprayer head. Depending on the application, I need 30-50 psi and 6....

compressor big enough for the task?  im having a carbon fibre air tank of capacity 3000 psi 48in cubic.......... and also im having a mini compressor of capacity 250 psi can i fill my tank ...

Constant pressure  I have a 26 gallon 4 hp air compressor and when using anything such as a impact or even a spray gun it will only give it power for a couple seconds then ...

What is necessary cfm to clear a 2,225,000 at 90 ft in diameter  I have a asi2900 venturi air mover I plan on using the asi2900 mover to clear the air in 2,225,000 tank at 90' in diameter for inspection what is the correct ...

Compressor flow issues  Compressor builds pressure but only puts out goog pressure for about 10 seconds and looses all air pressure even though there is air in the tank.Please ...

the compressor runs for a little bit then just shuts down and the motor just hums  the compressor runs for a little bit then just shuts down and the motor just hums

______________________
Bill says...

Is it a song you recognize?...

SCFM @ Different PSI  If a compressor is rated 5.4 SCFM @ 90 PSI, what SCFM is it capable of producing @ 40 PSI? Thanks!

_________________________
Bill says...

No ...

Compressor characteristics conversion?  I requested flow & pressure ratings from a vendor in SCFM & PSIA & he supplied characteristics in ml/min & mH2O. I tried finding conversion calculators ...

how to transfer cylinder capacity into cfm  there is a compressor for sale but does not give you the cfm it says


Description: 100L air compressor

Volt: 240V/50Hz

Tank: 100L

Power: 3HP/...

Running out of air  Just chasing gremlin down. What is the scfm or cfm rating for 3" pipe. Running 75hp compressor

________________________________
Bill says...

Check ...

What is the formula to convert MPA to CFM?  I need a convertion of MPA to CFM.

____________________________
Bill says...

MPA is a measure of force. CFM is a measure of flow. There is no ...

Technical question about compressed air flow  Does 12 cfm @ 90 psi mean that the compressor will deliver 12 cfm when there is 90 psi resistance at the outlet? If not, what does it mean?

__________________
...

Drop out of pressure or air flow when using air  when first use tool or shoot air out of nozzle... abundance of pressure... then quickly it drops out pressure air flow reduces alot and barely operates ...

Pipe size to be used for certain CFM in specific pipe length.  If there is a piping length of 100 mtrs and also of 1000 mtrs., to convey 250 cfm, can 2" pipe be used for both length to get effective result ?

__________________________
...

Air flow not getting anywhere...  gas motor is running fine, compressor has built up 125psi in tanks. regulator turn on full but gauge is not moving and no air flow in hose when I connect ...

Can I link two compressors together to increase CFM?  Hi Bill

I require a flow of 6.5CFM or greater at 90psi, will it be possible to link two smaller compressors, say pushing 4CFM at 90psi each, together ...

CFM SIZES for fans  What are the standard CFM sizes of air-supply fans?

_______________________
Bill says...

Hugo, I'm not quite sure what fans have to do with air ...

Need Compressor Capable of....  Hi, I need a compressor capable of delivering 16 CFM @ 90 PSI.. What size compressor will I need to achieve this?

I have to search the used compressor ...

PRESSURE QUESTION  will a compressor rated at 150 psi fill a pipe to 125 psi.

_____________________________
Bill says...

Paul, sure it will.

However (isn't there ...

Accumulator capacity   5odia piston cylinder stroke length 100mm operating pr.8 bar moving 2sec for forward and 2sec. for reverse so what is the air loss ?

________________________
...

how to convert bar to sccm   For the gas flow rate we hv to convert the bar to sccm unit

_____________________
Bill says...

Balu, Bar is a measure of pressure, sccm is a ...

How to relate cfm with pressure (bar or psi)?  I would like to know what is the calculation or table/formula that can relate cfm with psi (bar). I am having problems with my factory's compressor capacity ...

Upgrading a 2 gallon tank to a 4 or 5 gallon tank ...  Hi Bill,

Is there any advantage to adding a 2 or 2.5 gallon tank to my existing 2 gallon tank VS swapping it out for a 5 gallon single? I recently ...

Need air flow capacity in cfm for machine shop tool inorder to select correct compressor  machine shop tools list :

torque machine
safety valve test bench
high vaccum hand pump
pneumatic portable calibraTOR
TEST PNEUMATIC PUMP
CALIBRATION ...

AUTOMAN AT9  I HAVE THIS AUROMAN AT9 AIR COMPRESSOR, MADE IN SWEDEN I BELIEVE, CAN YOU DETERMINE WHAT THE CFM OR SCFM OUTPUT IS ON THIS UNIT? IT IS A DIRECT DRIVE 10 ...

i have an ingersolrand ep10 screw pressure fluctuates bad  I have an ingersolrand ep10 screw pressure fluctuates bad

My compressors pressure fluctuates really bad. Valves are set at 125 high and 90 to come ...

Convert cfm @ 200 psi to cfm @ 100 psi  have industrial compressor that is rated @ 1331 cfm @ 200 psi. We have dropped our pressure to 100 psi. How many cfm does this same compressor put out ...

12 - 16 lpm and 23-25lpm  I'm trying to decide which airbrush compressor to get. To use with markers, most of places I checked advise a 12-16lpm airflow and a 40 psi.I found a similar ...

Whats the smallest pipe I can use to have 500 cfm with 100 psi  Whats the smallest pipe I can use to have 500 cfm with 100 psi

________________________
Bill says...

Good question. In order for you to figure ...

COMPRESSED AIR CONSUMPTION   Dear All
How can i calculate air consupotion when compressed air blowing in open aria at the 6kg/cm-SQ throug 9mm hole.
regards
Dev

_______________________
...

Cfm and psi relationship with compressor ratings  If compressor can deliver 2.65 cfm at 90 psi
what cfm can be delivered at 20 psi?

_______________________________
Bill says...

Very good question....

Raj gohil  Dear sir;
i have two air compressor in my factory.8 kg/hr Capacity & its 220 C.F.M.
Actually I have know how to calculate C.F.M.

______________________
...

How long can Air be Compressed and give off heat?  Let's say I Compress Air so much that it generates Heat. How long can I keep the Air Compressed and still generate Heat?

For Example I Compress Air ...

Hose Diameter and Pressure  I'm sorry, I looked online everywhere for this. I think the answer is obvious, but I need to confirm.

My grandfather has a new air compressor and paint ...

Flow rate of compressed air?  What is the flow rate of compressed air @ 7 kg/cm2 through 18 mm ID pipe?

________________________
Bill says...

You might look at the sitemap,...

home project - soccer ball 'launch'  I am trying to make a device to 'launch' a soccer ball with some relative force to simulate a kick. I want to use a air cylinder, and assume its a relatively ...

I wont to build a long bubble fence. I need to know where I can get the proper supplies and what size compressor I will need. the compressor will be running 24/7. Help needed. Thanks.  I'm looking to see what it would take to build a very long bubble fence.This fence will be working 24/7. I need to know what size compressor to use and ...

how much cfm air required for 20tph boiler automisation  how much cfm air required for 20tph boiler automisation

nisikanta pani,ambika solvex limited,indore

_______________________________
Bill says...

Sorry....

what will happen if discharge pipe diameter is used less than specified  What is out come if compressor discharge pipe is reduced less than specification specified.

--------------------------
Bill says...

I'm not quite ...

2 stage air compressor not keeping up like it used to  I have a 60 gal 5hp 2 stage air compressor rated somewhere around 15 cfm @90 psi it's not even a year old. Ran everything fine with no problems , could ...

Compressor pressurizes, but no air flow  I have a Husky 2.5scfm, 0.5, model H130301F. It has two outlets; one at 90 psi and one at 40 psi. The compressor pressurizes to 125 psi, but nothing ...

Added an extra tank  I know, this may have been brought up before. But I have a older CH 2hp, portable, direct drive,20 gal unit. I would like to add it to a 40/60 gal. I am ...

Determining compressor CFM  I just purchased a old Worthington air compressor and I need to find out what CFM it will produce at 90 PSI. I have calculated the CFM at zero pressure ...

How to derive a specification for comressor requirements of a blow moulding machine?  All Blow molding machine used in plastic processing use air for blowing process.

The amount of air required for Blowing a machine capable of making ...

Air pressure ~ size of air cylinder  what capacity of compressor or the pressure required to lift 1 ton weight by pneumatic cylinders?

______________
Bill says...

Hi Amrinder....

The ...

DRAINING AND PRESURISING  SHOULD THE COMPRESSOR BE SWITCHED ON WHILE DRAINING?

ALSO ON TECH DATA IT STATES 10 BAR BUT COMP SET AT 5 BAR HOW DO I INCRESE PRESSURE TO 10 BAR?

____________________
...

What kind of compressor is mine  I recently bought a compressor with a 60 gallon tank and no motor. All I can find on the compressor is model 201tv and serial 557860. The plate on the ...

Is the air pressure to high?  I own a wolf apache 50. and the air pressure on the gauge
is reading 7.5 psi, where as the red line or danger area starts at 8 psi. i don,t have a owners ...

What should the air bag pressure be on an RV?  36 foot coachmen aurora with ford chassee

_______________________
Bill says...

Hey Tom. This is an industrial or home compressor type compressed ...

How do I calculate the CFM through 1/4 inch hose with 118psi pressure? The compressor makes 182 CFM  I need to figure the CFM through a 1/4 inch ID hose with 118 psi pressure from a air compressor that generates 182 CFM.
_______________
Bill says...

How ...

does line size have any thing to do with cfm flow  i have a 100 hp industrial air compressor with calablity of 600cfm. flowing through a 3 inch line pressuring up a 1725 cu/ft tank with a regulator set ...

Compressor size to unit   I am interested in a small sand blasting cabinet- it is rated at 10 CFM @ 100 PSI Max.

My compressor is a 25 Gal. 6.4 CFM @ 90 PSI. Is my compressor ...

I run a 1 HP motor on a pump ...  What will happen if i run a 1 HP motor on a pump that should have 3 HP motor? will i fry the motor or the pump? or will my cfm just go down?

_____________
...

Air flow restriction?  I sandblast glass and need a regulator that will maintain air flow at a low pressure. I am blasting through a 1/16 inch nozzle at 12psi. I am using a 20lb ...

Not enough flow for impact wrench  I have a 10 gallon electric upright compressor. Main tank holds at 125 PSI. I can't get enough flow to operate an impact wrench (max 90 psi) succesfully....

I need to maintain 10- 12 PSI constant air pressure feeding into an oil tank  Using a compressed air line, I am trying to pressurize my oil tank through its breather connection to remove any residual air from the oil hoses. I am ...

How to calculate the Spec(caoacity,pressure,Nozzel Dia.,.....)for Sand blast in order to preparation of surfaces?  I want to select a full set of Sndblasting equipment for preparation of surfaces,So I need the calculation of capacities and sand related to sand dimension,...

Air receiver sizing  How to do decide capacity of any air receiver?

______________________
Bill says...

Hello Vivekar:

This is an excerpt from the page on this ...

Compressor AHU doesn't function   System compressor AHU doesn't function when the compressor unit have been change.

Do i have to change the filter even though the compressor have been ...

What cfm does a model # 2z630d produce  I have an older compressor and would like to know what the HP rating needs to be for electric motor instead gasoline power and what CFM I can hope for?...

Line sizing  I have a 2 stage 7.5 HP compressor with a 2 inch outlet on the side but there is a plug with reducer to 1/2 inch that I cannot loosen or remove. I would ...

How to Calculate Air Compressor CFM  I have acquired an air compressor no motor, if i know the bore, stroke length and rpm it will run, what is the formula to calculate the cfm and also what ...

7.4 cfm @ 175 psi is what flow at 90 psi?  Kellogg American #B35UA ~ I have a compressor rated 7.4 cfm @ 175 psi, what would the cfm be at 90 psi

___________________
Bill says...

Steve,...

flex ducts  how many cfm's produce out each size flex ducts

__________________________
Bill says...

Hello John. it's a bit hard to even guess when you haven'...

tractor tire will not fill  I have a excalibur 4.0 CFM 1 hp air compressor. the model # is 600200. I can feel air coming out of the air nozzle. when I put the nozzle on the valve,...

How to calculate air pressure in motor pump vessel?  the cut-in of pressure switch is 2.5 bars and cut-out is 3.5 bars and head meter of motor is 36. how to calculate the air pressure in the vessel in psi?...

How many CF of air are there in a 5 Gallon tank with, 150 PSI  I have a tank, which is 5 gallons in size, I need to know how many CF of air there is in the tank when the tank has 150 PSI?

__________________________
...

sullivan 185d air compressor  I have a sullivan 185d air compressor that the motor runs fine.The problem is that it fills the air tank fine but when i open the valve a very short stream ...

Help in sizing a compressor  I need 72 CFM @ a constant 80 psi. What size compressor will I need please.



Bill says...

Brian, the rough rule of thumb is you will get ...

Low Pressure Bottle Portable fill  I need a portable way to inflatable toys to 6-7 psi.

What type of bottle do I need, trigger valve (would be easier to deliver air) and regulator to ...

How to get valve cfm  I want to calculate air flow rate require for purchase of new comprassor. I have 4 Pnuematic valve to actuate.what could be the CFM rtequired?



Bill ...

Inflating  When inflating things, tires etc, what psi should you set the regulator to?

______________________________
Bill says...

Carlos, you have a couple ...

My bostitch pancake compressor   i have the dial up all the way its supossed to get 135psi but its only getting to 100psi any reasons why or something i can do



Bill says...

Hi ...

metric to imperial conversion   I have a compressor spec. in metric what is it in imperial spec.

500 NM3/hr how can I convert to cfm@ X psi

_______________________
Bill says....

When using an air hose to remove debris from an area, what is the maximum pressure you should use?   When using an air hose to remove debris from an area, what is the maximum pressure you should use?

_____________________________

Bill says...

Fred,...

Minimum Air Pressure for a Torque Wrench  For the torque wrench to provide rated torque, a minimum air pressure of 70 psi must be maintained. How can I monitor this at the tool and alert the operator ...

AUTOMOTIVE SPRAYPAINTING  Hi, I purchased a 100 litre, 2 horsepower, direct drive compressor to use for pumping tyres, painting poles etc. Now I would like to spraypaint a project ...

I want compressed air 300 m3/hr at 6 bar pressure...  i want compressed air 300 m3/hr at 6 bar pressure, which type of compressor should i used and what its specification? give me detailed specification for ...

adequate air pressure?  My spray gun requires 6.5scfm @ 40psi.
My compressor has 1.8hp, produces 5.2 scfm @ 90psi, max psi is 200, and has a 4.5 gallon tank.
Is my compressor ...

CFM 's - How many CFM's can go through a 1 inch  How many CFM's can go through a 1 inch pipe at 100 psi ?

____________
Bill says...

Hey Mike. Have a look at this page on air flow.

Bill...

CFM - running a air through a 1" pipe regulated   I am running a air through a 1" pipe regulated at 45 psi. How much cfm of air is passing through the pipe?

________________

Bill says...

Hello ...

Formula for converting LPM to CFM for air compressor  I am having 200 CFM air compressor set point at 7.0 Bar. The reading in the lab is taken in LPM & i am getting 1500 LPM is 200 CFM enough to support 1500 ...

how to calculate air flow in CFM through a half inch opening pipe & assuming a constant pressure of 6 bar?  i have to claculate air flown through an half inch opening pipe for 1 minute assuming the compressed air pressure to be constant as 6 bar ?
i have checked ...

New air compressor  Some where I saw a new air compressor that was supposed to be real quite and lite weight. The new part of this compressor was the air tank was the hollow ...

Type of Air Lines  Typeof plastic pipe suitable for compressed air lines? This would be for a relativly small application with pie size not exceeding 1".
Thank You!



Bill ...

How to increase compressor cfm?  I currently have a compressor with 3.2HP motor running at 1040 rpm producing 11.2 cfm @ 90psi. If I install a 5HP motor running @ 3240 rpm will it produce ...

Check valve  do i need a check valve going into the reciever from the twin compressor head?



Bill says...

When your compressor stops, your unloader valve ...

Too much compressed air?  I have almost new Huskey 80 gal, 4HP, two stage, vertical compressor, model HS 781004AJ. Looks great, runs great, but it pumps up to 190 pounds by the ...

What is expected volume CFM to get 145 PSI?  Good day, we are trying to calculate required CFM to get an output of 145 PSI, throught our compressor. What is the correct CFM?
thank you for the assistance....

Air compressor recovery time  what characteristic most affects recovery time.



Bill says...

Ed, the most important characteristic is how much air you are using while the ...

Oil less vs oil lubed home/shop compressors  Hi there,

I am looking to get a bigger home compressor as I've discovered the joys of air tools when pulling and tearing down an engine. Right now ...

Tank build pressure, but dont get enough to the tools  I have a Husky 7 horse, 60 gallon compressor. I am not getting enough pressure through the hose to run any tool. I put on an air blower and it seems like ...

How many cfm of compressed air in a 5gal tank @ 100psi?  I'm trying to figure out how long i can do airbrushing by just using a 5 gallon air tank before i have to refill it again. I realize there are a lot of ...

Convert l/min to CFM  I have a machine that is asking for 80 psi 200L/min. How many cfm would that require



Bill answers...

Hello Robert.

I haven't corroborated ...

Compressor versus generator?  How do you determine generator size vs compressor size



Bill says...

Sorry James, I'm not sure I understand the question. Can you tell me ...

Variable speed grinder min. 16 cfm@90 psi, compressor 14 cfm@90psi????  Hello,
I have a 220v,4.7hp,single stage,80 gal. compressor that list max output of 14 cfm @90 psi. I would like to run a variable speed grinder/polisher ...

Air pressure fluctuated, added tank, fixed  I have a machine that has a air supply fluctuation between 80 to 65 lbs of pressure, i added a 100 gallon tank as air storage now i have a constant 90 ...

My wife bought me a air compressor will it run the tool that i wont or should i take it back  what compressor do i need Craftsman 1 hp. 12 gal. Portable oil lube Air Compressor SCFM Delivery At 40 psi: 3.7 SCFM &
SCFM Delivery At 90 psi: 2.4 SCFM ...

i have 2 quesions 1 is oil in silentaires compressors and can you run two airbrushes on there 20-A  ive herd silent aire compressors sometimes leek oil can i do anything to prevent this..2 traps maybe

can you hook up two airbrushes on their supersilent ...

CFM question  I purchased a air compressor that is rated to deliver 3.8 scfm @ 90psi...

Also purchased a die grinder rated for 3.0 SCFM @ 90PSI.

The air tank ...

Pipe size calculation  dear MISS./Mr.

i want to know about pipe size (line size) for transfer oxygen from "A" point to user with bellow data

height of user from "A" point ...

Compressed air pipe size  i am designing an air spring as follows.
- compressed air in the storage tank, which deliver compressed air to a cylinder to act as a spring.
- Working ...

Compressed air question  At 30 gallons of air compressed at 150 psi how low would the pressure get in 14 hours?

flow rate = 2 cfm at 60 psi

The actual air pressure will ...

2 compressors - plumb them together to increase flow?  This sounds simple, but you know how that goes. If I want 12ish cfm can I just use (2) 6ish cfm compressors and some kind of Y connector to supply a sandblaster?...

What size compressor?  I was wondering if anyone could help me with a small problem I have. I own a 10 HP Kohler engine with a 30 gal tank.

What size compressor can be ...

Blowing out water lines .  I have a cabin and need to blow out the water lines and the water heater after each use. What size air compressor should I buy?



Bill says...

Hey ...

a 260 psi portable air compressor  Will a 260 psi compressor top off a 22.5 inch tire at 125 psi?



Bill says...

Yes.

The compressor doesn't care about how big your tire ...

2 questions about air compressors - tanks and temperature  Why is the tank made out of steel and not another kind of material?

Why is the air that comes out of an air compressor cold?

This is for a school ...

air compressor CFM  How to calculate air compressor cfm, please maintion with suitable example.



Bill says...

Hi Sagar: either check with the manufacturer of ...

My air compressor has a copper line on it and after it has been running a while it gets hot. Why does it get hot?  My air compressor has a copper line on it and after it has been running a while it gets hot. Why does it get hot?



Bill says...

When you ...

Calculating scfm @ 40 psi  I'm researching compressors in order to purchase one which will meet the volume demands of an HVLP sprayer: 7 scfm @ 40 psi.

The problem is that most ...

I will require approximately 200cfm at 30psi...  I work at a water treatment facility which houses a 10HP air compressor with 120 gallon tank and a rating of 35cfm at 175psi. I need to perform a task ...

How much air different compressors compressed per hour  Tell me how much air different compressors compressed per hour.



Bill says...

Hello Parveen. Thanks for visiting and for writing in.

If ...

Instrument air pressure  Instruement air pressure is generally between 4 to 8 bar(g) at industrial plant. I want to know the reason of this value selection. it depends on economic ...

Air compressor tank fill issue  My air compressor has a 30 gallon tank but only fills 10 gallons.



Bill says... huh?

How can you tell? Are you saying that your cut out ...

How do i calculate the compressor sizing...  i have an auto repair facility, we run 5-6 air guns, air drills, air grinders, air locks on hoists, tire machine and spray guns for undercoating. they ...

How to simply/cheaply increase cfm  I have a small 6 gallon compressor and has an output of 3.4 cfm @ 40 psi and I want to drive a paint sprayer for a one time project and not looking to ...

Compressed air systems flows  what is 0.03mgs/m oil content in compressed air in parts per million (ppm)

Can you supply the conversion from mgs/m to ppm



Bill says...

Howdy ...

Compressed air flow question.  If I have a 50hp compressor and i have air hose size 6 mm exhaust running 24 hrs,how much cfm are we using?

Hr />

Bill says...

Lots!!!

Hello ...

About pressure againts flow - I would like to know whether is possible to supply   Dear Sr: I have an a SPEEDAIRE 4UP73 compressor , I would like to know whether is possible to supply air compressed to an ATI aerosol generator model ...

compressor won't maintain pressure  I have an emglo air mate 1 1/2 horse. it won't maintain enough pressue to run a 2 gallon hvlp paint tank or a hand held texture hopper.it says it should ...

How to calculate the CFM of an air compressor?  compressor details,
Max working PR-15
Hyd.Test PR-25
Design. PR-16.5
Capacity-250
HP-7.5



Bill says...

Hello Sakil:

Because of the ...

Need formula to calculate Article wise air consumption in an airjet loom  Trying to figure out Standard Air Consumption article wise while weaving on Air jet loom (Picanol omni plus).

Objective to compare Actual Vs Standard ...

hvlp spray gun supply issue  I find most hvlp guns require around 15 cfm @30psi to operate. I have a friend who has a 6.5 hp,60 Gal.,compressor rated @ 13scfm @40psi and 10.5 scfm ...

Air capacity for multiples pneumatic valves  I have a system with six pneumatic valves, the inlet pressure to the control panel is 110 psi and the inlet line is 1/2 inch.This line was reduced to 5/...

Regulator settings  What regulator setting would you use for blowing off of equipment using a standard nozzle?



Bill ponders...

Hey Cam, nice to hear from you....

Craftman air compressor pressure issue  It is a 20 gal 2hp it only has 100 psi how can i get it up to 120 psi?



Bill says...

Are you saying that the high pressure cut out is 100 ...

i have a new Husky compressor i just bought  its a 60 gallon tnk. and should deliver 10.2 scfm at 90 psi

I ran 1/2" pex tubing from the compressor, the outlet is about 3/4 stepped down to about ...

Increase output pressure  I want to increase the output pressure on my air compressor. it is currently set at 115 psi, and there are no adjustments on the pressure switch to adjust,...

Air compressor won't run impact wrench  compressors and scfm, help explain

--------------------------------------------------------------------------------

I was removing a large pinion ...

low air pressure in a plant  I have a current system with 2 Kaeser BSD 60 compressors, a 400 gal expansion tank and a 450cfm dryer with all the appropriate filters.

The problem ...

Air compressor CFM rating  What is the delivery rating of a Campbell Hausfeld VH6314HDRB compressor??



Bill counters...

Hi Mr. Goat. Nice of you to write in.

That'...

How much cfm will flow thru 4.25 Dia. pipe 12 inches long @ 300 deg. F and 50 P.S. I. boost?  A engine for a Bonneville streamliner is producing 2800horsepower at 50 p.s.i boost. Can I duct it from a remote mounted supercharger to the engine thru ...

Can I run a impact wrench from my compressor?  i have a 1 1/2 horse power 4 gallon tank that states
Air Displacement 9.0 CFM (240.5)LPM
AIR Delivery 5.9CFM @ 50 PSI
5....

10 GALLON SANDBLASTER / Flow issue  Hello, I once used a sandblaster at University some time back and never thought I'd need to know more about them in the future. However, I've just purchased ...

Remote Receiver tanks  If I use a long supply line to drive a piece of equipment (like more than 100 metres or even kilometres), would one or more extra receiver along the line ...

Breather consuming compressed air?  Is 45 cfm enough for the Ingersoll-Rand compressor T30 model 3000. I need to put a Donaldson breather on it to remove humidity. Very low duty condition....

A Little Sand Blasting  I'm thinking about buying a small, home use sand blast cabinet that says it requires 10 cfm at 100 psi. I have a 26 gal compressor that is rated for 6....

Regulators....  I have a new 60gal Husky Pro compressor, 135psi, 12.9 CFM. The outlet hole is threaded 1/2in. Can I use a 3/8" threaded regulator/lubricator combo using ...

CFM and PSI - regulate it down to 45 PSI  I have 2 air-dryers that operate at 45 PSI and 12 CFM each. I was wondering if I could get a 90 PSI compressor rated for 12 CFM and regulate it down to ...

CFM Ratings at Pressure  I just purchased a new 1.5hp oiless compressor rated at 5.2 CFM at 50 PSI and 4.2 CFM at 90 PSI to drive several tools including an angle grinder which ...

There is pressure in the tank but none comes out of the hose  My compressor will build up pressure in the tank but there is nothing that comes out of the hose. When I take the hose off, there is no air coming out....

How many PSI?  I'm looking at buying a compressor for my home garage. I have to remove a clutch hub nut on a Ducati and an 300ft/lbs electric impact wrench just isn't ...

More cfm  If I put on a smaller wheel on my motor will it give me more cfm?



Bill answers...

Hi Chuck, and thanks for writing in.

I have to caution ...

Air compressor to inlfate car tires?  How do I use a 300 PSI air compressor to inflate my car tires?



Bill answers...

Hello there, and thank you for visiting my website and taking ...

Another question about boosting CFM/SCFM?  I engrave granite and marble stone. I have an 80 gallon compressor that produces 17 scfm. To do deep engraving I need to at the very least double that?...

Figure out the flow in a 1/4" hose at 80 psi?  1/4" air line at 80 psi is to power 5 tools (10.5 cfm each)

will this 1/4" line supply enough air for the tools? I dont know the hose length or compressor ...

What does scfm mean?  What does scfm mean in air consumption?



Bill answers...

Hello Gopal. Nice to hear from you.

SCFM is a form of measure of the flow of ...

What is NL as 500 NL  Machine data states compressed air as 500 NL
can not find this NL unit defined.



Bill responds...

Hello Bill. Welcome to you and all folks ...

How to figure the amount of air can move through a hose at a given pressure.  Volume of air in a 1/4 inch hose verse a 1/8 hose?



Bill answers...

Hello Jim, thanks for stopping by and writing in.

The answer is...it ...

PSI requirements  I have a Trulsen refigerator and I need to clean out the dust and dirt in the cooling coil. How much psi out put do I need for a comtressor?



Hello ...

Compressor Intake Air Quality  Standard of cleanness of intake air in compressor room.

How much dust can we allow to be contented in air intaking to compressor room especially in ...

CAN I GET A BIGGER LITER PER MINUTE FLOW RATE?  HELLO I COME FROM GREECE THAT IS WHY I USE METRIC SYSTEM,I HAVE A SMALL AIR COMPRESSOR 230V 1,5KW 106LT/MIN FLOW RATE 2850RPM WITH A 24L TANK AND WITHOUT ...

How big an air line?  I have just purchased a small pouch filling machine that has a small 1-30 ML pump that requires air,I don't know its requirements but I have my Craftsman ...

compressed air - cubic feet of nitrogen needed to   How many cubic feet of nitrogen is needed to fill a 4000 ft 1in diam. pipe to 50 psi?



Bill takes a stab at it...

Hi Carl:

I'm into industrial ...

110v Compressor Output Flow & PSI  I have read a lot of info on this great site and I was wondering if you could check my math on something.

I have a home garage that has 110v power ...

Air consumption Calculation of actuators?  Dear sir,

I need to calculate air consumption of all of my actuators.

The data I got is Air consumption in NL/travel is 0.12 for one of my actuator....

Running two or more air tools at the same time, tank volume, 1 or 2 stage  Hi,

We are considering purchasing an air compressor for our home shop.

When running two tools at the same time, say a die grinder with 5 CFM at ...