Air Tanks


Do you have a question about compressed air tanks for your air compressor?

Are you looking to plumb an extra tank to your air compressor? This page is intended to provide you as much information about compressor air tanks as possible.

A pet and persistent itch of mine is why air tank size is measured in gallons, and compressed air is measured in cubic feet? How do you convert between the two if you wish to?

Air Tanks Size


How do you convert between gallons and cubic feet? You divide the number of gallons of the tank size by 7.48

(7.48 gallons = 1 cubic foot)

Or, you can multiply gallons by 13.4% (.1337) to get the number of cubic feet in the air tank, as well.

For example, 300 gallons = approximately 40 cubic feet.


compressor air tanks - www.about-air-compressors.com

For detailed information about compressor air tanks, follow this link to a page on this site all about compressor receivers. It will provide a lot of answers to common questions about air tanks.

If you have a question about your compressor air tanks, please see those answered below first as possibly your answer is already there. If not, send in your question using the form below.

If you can answer a question about compressor air tanks please comment as it will help many compressor owners.

Thanks,

Bill



Air Tank Information

Having an issue with your air compressor air tank? Ask a question, find an answer, and share your findings or advice with the compressed air using community.

Here are other visitor's issues with Air Tanks

Please see below.

Tank Sprung a leak 
I have a 1980 30-Gal Craftsman Professional, manufactured by DeVilbiss, compressor that I inherited from my Father-in-law. It's been working fine …

Propane tank as reserve tank 
Hello there - I am just starting a ground-up restoration of an old triumph tr4. I have a 2 hp, 20 gallon compressor that puts out 6cfm at 90 psi on a really …

Can I plumb the second tank off drain?  
Can I plumb the second tank off drain? So theres only one drain to open.

Inspection port sizes 
I am designing an accessory product for air compressors and it would help me if I knew (A) the size and thread of the inspection port and (B) whether this …

How does air tank volume fit into the picture? 
How does air tank volume fit into the picture? If you have a 250 gallon tank vs 5 or 10 gallon tank? I am wondering if there an advantage to having …

Compressed Air Volume 
How many cubic feet of air would I get out of a 2.5 gallon tank at 125 psi and 150psi? I am putting onboard air in my 1979 VW camper to inflate a driveaway …

compressed air storage tank design 
I need to built a air storage tank where about 3 or 4 compressors will be used to fill the storage tank in order to provide continuous supply to different …

How should I add a tank to this DeWalt compressor? 
I have this Dewalt 165PSI air compressor. It has 2 outgoing connectors. Can I hook a tank to one of those. Or should it be connected to the safety release …

Will compressor extra tank explode??  
will my exmpty extra tank explode?? please give me a straight forward answer...thanks. I have two compressors with regulators on them each has a max …

Retiring an old compressor 
I found an old compressor in the woods behind my house (on my property). It is completely covered in mud and starting to rust; was laying on its side. …

Plumbing a Compressor to the Tank 
I am looking at taking a 5 HP pump and Motor and putting it on my Harbor Freight 21 Gallon tank. I would need to replace the copper line that runs from …

how long should a compressor hold it's pressure? 
I am new to compressors. I just purchased a used 30 gallon/5.5 hp compressor (craftsman compressor 919.165310). It is working fine, but I notice that …

Coupling 2 different PSI rated tanks together 
I have a system with a 240 gal / 250 psi rated tank and a 240 gal / 400 psi rated tank. They are currently coupled together, and the system operates …

Seperating tank and compressor 
I want to separate the tank from the compressor and install the tank in another part of the building (don't have the room for it). At the moment the pressure …

Two tanks one compressor 
I just bought a new 60 gal single stage compressor and want to tie it into my old 60 gal compressor. I only want to use the new one to fill the old tank. …

Adding a tank to a compressor 
Our wood shop has a new (2015) 10 HP compressor with a 120 gallon tank. We run from 3 to 5 nail guns/staple guns and plan to add 2-3 guns. Do you think …

How Tight to Turn Tank Drain Valve 
Hi Bill. How tight should a tank drain valve be? Until the air stops flowing and maybe another quarter turn. Or, until the valve can't be tightened …

add a 100 pound propane tank and 2 35 pound tanks 
i have a 3 hp 220 air compressor and i need more air volume i also have 100 pound propane tank and 2 35 pound tanks what would be the best way to hook …

Moving drain valve up higher 
I've scoured the internet and can't find an answer. I don't use my compressor daily...but still want to be sure the tank stays dry. I'm fine with …

Finding replacements for the compressor tank support feet 
I have an 80 gal vertical air tank with bent feet and would like to know where to purchase replacement feet. I have an ASME certified welder to do the …

How long to fill a 12,000 gal tank with 5psi of air 
I have to test an underground tank 12,000 gal with 5psi of air for a test. I only have a typical dewalt 5.0 cfm at 90psi and 160psi max out of my 110 …

Why air tanks are not having sharp angles? 
give reasons why air tanks are not having sharp angles, as seen in petrol and water tanks ? why is it always in cylindrical shape ?

Tank not draining 
Hey Bill I have a 1971 kaguard air tank . The tank is a horizontal one I have drained the tank before from the bottom completely,and then turned it up …

What if we find rust in the drain water? 
1.7 hp 13 gallons CH with an inline water filter and a small 2 gallons CH,no inline filter, have the same problem. When it is not used for a long time,the …

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Can I add a tank to a compressor that dose not come with one  
I'm buy a tc-20 compressor that is new for a cheap price and it dose not come with an air storage tank. I will be using it to paint models and was wondering …

Replacing the compressor tank drain valve 
The compressor tank drain valve on bottom of tank broke off. Is there a replacement? Where can one find a replacement tank drain valve for the #40400? …

Prevent overpressurization of second air compressor tank 
This is a question just for an explanation on how or why something works. I'm sure theres not much danger adding a 2nd tank to an air compressor. But …

Water keeps building up in compressor air tank 
what to look for the cause __________________ Hello Roger... Have a look at the pages on this site (see nav bar at left) under air compressor issues. …

Compressor tank exploded on Craftsman air compressor 
this compressor was a 1978 model and was stored for many years but, only used aprox 5 years. it doesn't appear to be rusted out. it was not up to its operating …

About adding a tank to my compressor 
I have a 2.5hp/ 8 gallon tank, 125 max psi. I think the delivery is about 5 CFM. I want to use it for painting but it seems the motor is always running. …

What is a compressor tank like this for  
I'm a hobbyist woodworker and I've recently set up a little paint booth in my garage. I've been able to spray small projects with a combination of 6 and …

Increasing compressor tank pressure 
I have a Craftsman (Devilbiss)single stage oil-free compressor, about 12 years old. It has an ASME rated tank and has a Furnas pressure switch that is …

Use propane tank for air compressor 
Can a large, say 100 gallon propane-lp tank be used with my air compressor? They seem to be cheap and available. ___________________ What is the pressure …

I want to make a compressed air storage tank 
I have two compressor of 9.3cubic meter per min and I want to make air storage tank for them. Giude me that how I size an air reciever tank. Two compressor …

Drain or do not drain a compressor tank 
I have a 60 gallon tank compressor and plan to use it occasionally in my home garage. How often should the tank be drained? IS there any potential …

Clean the inside of an air compressor tank 
I have a 60 gal compressor that have been setting there for about 2 years, but now i finally want to install it. I want to know if there is a liqid …

What is the difference between air tank shapes 
Air compressors size & shape question. What is the difference between dual bottle ones and pancake ones? __________________ Howdy, and thanks for …

Best place for an extra air compressor tank 
About extra storage tanks of the portable type: it seems to help more for high demand, but short cycles, to place the additional tank near the tool. That …

On board compressor air tank for my 4WD 
Hi Bill Appreciate you expertise and the hard work you have done explaining all about the air on the web. It’s just amazing. I would be grateful …

Use portable air tank as a compressor tank  
I have a small compressor motor that works fine for a brad nailer, but has no tank to run, say, an air chisel. I would like to know if I can attach a portable …

Using an air compressor as an air tank 
Can I fill a tank style compressor at home, transport it to my garage, which has no electricity, and then release the air without a power source? I can't …

Putting a drain valve on an air tank 
Hi Bill, i've got a compressor that doesn't have a drain, can you please give me some advice how i could add a drain valve on my compressor? Thanks Regards, …

Can I put two tanks on one compressor 
Adding second air tank to small compressor to increase volume Where should the pressure regulator be located...if it stays in the same location, would …

Add another compressor tank to an existing air compressor 
what will happen if i add a tank to my compressor that i have now. will it add cfm? im thinking of puting a shut off on it so i can use it only when i …

Tank drained and still get water in the lines 
Hi Bill, I have drained compressor regularly and changes air filter, but still get water in the lines. This is a 5hp boyce air compressor. 1. What …

Difference between sizes of compressor tanks 
what is the difference between a 6 gl and a 33 gal air compresser _________________________ Kris, aside from the obvious, the tank size, there could …

Compressor tank has a hole 
HOW OFTEN IS IT REQUIRED TO HYDRO TEST A PRESSURE TANK ON A COMPRESSOR SYSTEM? __________________ Bill says... I know of no regulation that pertains …

Replace an older air compressor tank 
I have a old mw 20 gallon air compressor that developed a pin hole leak. I obtained a newer campbell hausfeld 13 gallon air compressor that had a broken …

Add an additional tank to the system 
I have a portable compressor and have received a larger tank from a old compressor. Can I couple the two with a hose between them and increase my volume …

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Air fitting on air tank 
I am trying to mount an air fitting to a tank. I would like to know how to seal it properly so that air does not leak up the threads of the fitting. …

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