About Air Compressors.com

More than 16 years on line helping folks with their air compressor problems!

You are here: Home / Dual air compressor setup

Dual air compressor setup

 

by Kons
(Gr)

Hi there,

Is it possible to connect two small air compressors?

 

Plumbing compressors
Plumbing dual compressors

 

I’d like both to be operated by one pressure switch with separated discharges on the same tank accompanied by 2 check valves sharing the same relief line of the pressure switch?

Doable?

_____________________________

Connect two small air compressors
by: Bill

Anything’s possible, I guess.

If both pressure switches “saw” the same tank pressure, if they both had the same cut in and cut out, they may cycle OK.

Not understanding why you would want two discharges? Why not one, to a manifold, into which you could plug as many couplers as your manifold had spaces?

“accompanied by 2 check valves”, not between pump and tank, as then the pressure switches might not get a pressure reading from the tank.

Seems like an odd request. More details about why you need to do this might help.

_________________________________

Dual compressors
by: Doug in s.d.ca.

Sounds like you just want to share the air between two workers, but one compressor isn’t quite big enough for either worker.

Keep it simple. Just tie the two tank outputs together, and run that to a manifold with two outputs.

No need for check valves or any of that.

If they both try to start at the same time and that’s too much for your power supply, just adjust the cut-in on one of them a pound or two lower than the other, and they’ll power up in sequence.

If you want to even out the wear on them, then reverse the cut-in settings every so often.

If that’s not what you want, what Bill said…

____________________________________

Schematic
by: kons

Hi again

i think my English are not the best, neither my pneumatic skills. I think my drawing might help on what i try to mean!

(Graphic has been added to the top of this thread – Moderator)

________________________________________

Dual air compressor
by: Doug in s.d.ca.

As mentioned before, I think we understand what you wish to do, and what you propose in your drawing would work, but based on what we know, it is not necessary, and overly complicated.

The question remains, why do all that? Are you trying to save money on the pressure switch?

Please give us an idea of what you are starting with. For example, a couple of bare compressor pumps with no tank or controls? Or a couple of complete stand-alone compressors? Or is that to be determined?

___________________________________________

Dual air compressor setup
by: Kons

I only have x 2 small compressors so far (piston-150watt each,used) and intended to be used on a
50ltr air tank (which I haven’t bought yet,with all the additional components required).

I was told that one alone is too small for the desired capacity.

No ,I don’t try to save money on a secondary pressure switch, I just thought making them start/stop simultaneously, as one, because of the low HP output.

I used to work on sheet metal fabrication and finally decided to make a sheet metal enclosed air compressor-vertical box to add to my home workshop.

____________________________________

Multiple compressors
by: Doug in s.d.ca.

OK, I thought that might be the case.

Go here:

https://www.harborfreight.com/air-tools/air-compressors/10-gal-25-hp-125-psi-oil-lube-air-compressor-69092.html

then look at the reviews – scroll down to the one with three compressors. Check out the photo.

That’s how to do it. The manifold on the floor at right is an off the shelf thing, but you can use whatever you want, and the combined output on the single hose can be used directly, or eliminate the hose and connect it directly on your proposed tank.

You may or may not need separate power connections as the author has done. You really don’t want two or more compressors coming on at the same time as that will tend to strain the electric service.

The only caveat is that the regulators should either be removed or left wide open. If you don’t follow that, then the regulator with the lowest setting will bleed off air to get to its setting.

The scheme applies to as few as two up to however many compressors you need. You don’t need extra check valves as they are self contained on the compressors.

Feel free to ask if I left anything out.

_____________________________________

Dual Air compressors
by: kons

Hi there,

I saw your link and it did helped, as also generated a new approach.

Thanks all for your answers and guidance!

_______________________________________

Dual air compressor
by: Doug in s.d.ca.

Kons –

Cool. Thanks for the update.

Send pix when you get your setup going, please.(!)

Have fun.

 

 


New comment? New question? Please add it here along with photos to help others help you with your compressor and equipment problem!

Subscribe to this page / comment / post
Notify of
guest
guest
10 Comments
Inline Feedbacks
View all comments
Shawn
Shawn
January 18, 2021 1:11 pm

Hello, found this because i recently got an older F350 with a service box on the back. After removing some panels inside the box i found a system. Single 15 gallon tank with twin compressors. Now it would seem that when i wire one up it will run and run and run (gave it about 20 mins before cutting power while still running) and i build a little pressure, try to wire both and i blow any breaker i’m on. Both have thier own pressure switch (which i have no idea how to find out what it’s set to. I… Read more »

IMG_20210118_120037.jpg
IMG_20210118_120053.jpg
Reply
View Replies (8)
Fred
Fred
May 14, 2020 12:52 pm

Combine two compressors to increase cfm.
I have a Rolair VT25Big 2.5hp 6.5cfm 5gal tank with 100 ft ⅜” Rolair Noodle hose and a Hitachi 10 gal reserve tank, 2 3 ft jumper lines to connect to hose reel and Hitachi tank. I want to increase my cfm to run a paint sprayer and a needle scaler. If I purchased another VT25BIG, (several reasons budget, limited electrical,) I would get 13.5cfm? Run lines from both compressors to Hitachi, line out of Hitachi to tool.

Reply

Search here to find the specific compressor info you need!

The latest pages added to this site include…

  • The Porter Cable compressor tank is full, but I can’t get air to come out? – December 2020
  • The compressor appears to compress the air but there no air at the hose on a 921.166460 – December 2020
  • Bambi 75/250 won’t build air after being on its side – November 2020

Getting around this site…

  • About Air Compressors
  • Sitemap – About-Air-Compressors.com
  • About Different Brands of Air Compressors
  • Calculating CFM
  • Identifying An Older Air Compressor
  • Jim Graham

Troubleshooting a compressor. Issues common to all and by the compressor make.

  • Troubleshooting Your Compressor
  • Compressed Air How To
  • Picking A Compressor
  • Air Compressor Parts
  • What Is My Compressor Worth

To help you understand compressors!

  • Compressed Air Treatment
  • General Compressed Air Information

Disclosures etc.

  • Privacy Policy
  • Disclaimer & Copyright Policy
  • Contact About-Air-Compressors.com
Want to bragg about your gorgeous computer rebuild? We'd welcome it here!"

RSS feed information.

If you wish to be updated when new comments are posted, add: about-air-compressors.com/comments/feed/ to your RSS reader. Thanks.

© 2021 · about-air-compressors.com ·

wpDiscuz