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Air compressor help (piping)

PostPosted: Sat Oct 21, 2017 5:55 pm
by sportbikepainter
So, I have an Eaton 7.5hp, 80 gallon 2-stage. I have a Maxline 3/4" master kit for plumbing the air. I have Flexzilla 3/8" (body) and 1/2" (paint) hoses. What do I need to get this to my 3/4" air line kit?


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Re: Air compressor help (piping)

PostPosted: Sat Oct 21, 2017 7:55 pm
by chris
Combination of a couple of copper or brass threaded adapters from the hardware store, and a nice flexible hydraulic hose from a place like Tractor Supply. You may get away with just the hose, with the right sized fittings. That's how I did mine, same size compressor.

Re: Air compressor help (piping)

PostPosted: Sun Oct 22, 2017 9:12 am
by DarrelK
Yeah, basically what Chris said there. I come out of that fitting with a short straight piece of pipe just to get my stainless steel flex hose closer to my air to air aftercooler.

Re: Air compressor help (piping)

PostPosted: Tue Oct 24, 2017 5:23 pm
by sportbikepainter
Thanks. I was overthinking things, as usual. I'll post my setup tomorrow or Thursday. Almost done.

Re: Air compressor help (piping)

PostPosted: Wed Oct 25, 2017 4:40 pm
by sportbikepainter
[Have everything wired, I think. The electrician wasn't familiar with 220 compressors and couldn't get it. I think he moved wires to the magnetic switch.

Do I have this right?

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Re: Air compressor help (piping)

PostPosted: Thu Oct 26, 2017 6:34 am
by BeoBob
Rut Ro.

Re: Air compressor help (piping)

PostPosted: Thu Oct 26, 2017 7:48 am
by chris
tough to tell from the photos and not standing in front of it, to trace the wiring.

please do not energize that circuit until you get someone who knows what they are doing, to look it over. It sucks to create an unintended arc welder...

Re: Air compressor help (piping)

PostPosted: Thu Oct 26, 2017 2:15 pm
by sportbikepainter
I got the wiring right (finally) and I have a bad contactor. They're sending me a new one.

Have a leaking elbow in my iron pipe. I've put new Teflon tape on it and tightened it, but it's still leaking.

Re: Air compressor help (piping)

PostPosted: Thu Oct 26, 2017 4:12 pm
by chris
I don't like using iron for air delivery, for that reason plus eventual interior rusting. I sweat in 3/4" copper for the entire run.

Try tapping around the perimeter of the iron elbow with a hammer, see if your leak goes away. That iron is very malleable.

Re: Air compressor help (piping)

PostPosted: Fri Oct 27, 2017 7:40 am
by BeoBob
Glad you got the power hooked up correctly. Iron pipe... for water I use pipe dope cause it takes a lot of tape to fill the threads. Don't know if pipe dope would be a contaminant for air. So I would suggest MORE tape than you think is needed.