Two compressor hook up question

[01birddog]

I want to hook up two Quincy 325 compressors with 120 gal tanks into one system. These are about 75 ft. apart in shop, one outside in enclosure the other inside. 1/2" gal. plumbing and both on at 120psi off at 150psi, both with check valves between tank and pump. One is operating at about 600 RPM the other at about 800 RPM. Do i just "T" them into the air lines air lines and what off/on differences might be will take care of itself? Not that i need that much air but i just want them tied together.

Thanks.

 

[Bondo]

Do i just "T" them into the air lines air lines and what off/on differences might be will take care of itself?

Ayuh,..... Just hook 'em together,.....

If the pressure switches are slightly different, 1 compressor will be doin' the bulk of the work,.....
The switches are adjustable, so good luck timin' 'em to work together,....

 

[homebuilt burner]

I worked at a place that had 2 compressors, one always kicked in first. They were both just hooked up to the same airline. We did have a check valve between the compressor tank and the airline. Also, had a ball valve to shut the line off if we needed to work on one or replace one.

Yeah like Bondo said one will work harder, but you can readjust every 6 months to even out the wear.

 

[larry_g]

I've never bought into the equal wear idea. Have one do most of the work and a built in backup that works only when necessary. I do agree just connect them both to the mainline and have a shutoff valve at each compressor so that you may take it off line when needed. I'd also suggest a union between the outlet and the valve so it can be easily disconnected and moved if necessary. If this is just mainly for fun think about the cost of compressed air, it is expensive. I'd more think along the lines of using one compressor all the time and only bringing on the second if demand requires it.

lg
no neat sig line

 

[sberry]

I have 2. They are simply t together, this let's it use both tanks. I actually have a receiver between them. Nearly 200 gallons and the master is a 3 hp. I have the breaker off to the 5 backup/demand which I rarely use. I sanded continuesly the other day,, 20 minutes or so with a heavy tool and was just running down when I finished. I flip the other on for some sandblasting
I can valve isolate either one.

 

[Travis31415]

I have a 5hp 80gal and a 7.5hp 80 gal. in parallel. They are both controlled by the same pressure switch and have individual shutoffs and check valves.

Both of the compressors tee together and run about 60ft to a 60 gal receiver tank with a refrigerated dryer. The system works great and has for 10 years. The detached receiver tank is key as it allows the air to cool and moisture to condense out.