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Vintage Brunner Air Compressor

83glt

Well-known member
Joined
Mar 17, 2013
Messages
65
Picked this up off craigslist over the weekend. The seller just listed it as an "old compressor" that worked and built to 140 lbs. It was cheap and although it's heavy, I brought it home. After wiping away some of the dust I discovered it's an old Brunner - A330 pump, tank is made by Pressed Steel Co., circa 1946, the electric motor is an old Wagner repulsion induction type, 1/2 hp, continuous duty, 1725 rpm. The pressure switch is a PENN, which I think is used primarily with refrigeration type compressors. The seller said this was his father's and that he had rigged up the wiring with the light/outlet switch. Guess that's kind of handy to have this thing double as a 500 lb extension cord!

It looks a little rough, but there are no leaks and there was very little water in the tank and it came out clear. The seller said his dad maintained it well.

It runs perfect as far as I can tell, and is incredibly quiet.

Does anyone have any information on this particular pump and motor? It takes about 10 minutes to get up to 140 lbs., and it's been set up to run continuously - no cut out/in. Any idea what kind of CFM I can get out of this? I imagine pretty low, but would this have been used in a service station just for tires? Any other use I can expect out of it?

Anyway, here are some pics:












 
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cclfn

Well-known member
Joined
Jul 31, 2012
Messages
308
Location
NW
Picked this up off craigslist over the weekend. The seller just listed it as an "old compressor" that worked and built to 140 lbs. It was cheap and although it's heavy, I brought it home. After wiping away some of the dust I discovered it's an old Brunner - A330 pump, tank is made by Pressed Steel Co., circa 1946, the electric motor is an old Wagner repulsion induction type, 1/2 hp, continuous duty, 1725 rpm. The pressure switch is a PENN, which I think is used primarily with refrigeration type compressors. The seller said this was his father's and that he had rigged up the wiring with the light/outlet switch. Guess that's kind of handy to have this thing double as a 500 lb extension cord!

It looks a little rough, but there are no leaks and there was very little water in the tank and it came out clear. The seller said his dad maintained it well.

It runs perfect as far as I can tell, and is incredibly quiet.

Does anyone have any information on this particular pump and motor? It takes about 10 minutes to get up to 140 lbs., and it's been set up to run continuously - no cut out/in. Any idea what kind of CFM I can get out of this? I imagine pretty low, but would this have been used in a service station just for tires? Any other use I can expect out of it?

:thumbup::thumbup::thumbup::thumbup:

I don't know anything about it but it looks good. That might be pre-wheelbarrow style contractor A/C ;)
 
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Fixnair

Well-known member
Joined
Jan 5, 2013
Messages
476
Location
Sapulpa OK
You are going yo get about 4.5 CFM per horsepower. Run it up to 125 psi and check the amperage on the motor with an ammeter. If it is at full motor nameplate, 7.2 amps then the pulleys are the correct size. Since the motor is 1/2 horsepower hen you will get a little over 2 CFM.
 

Johnny A

Well-known member
Joined
Oct 11, 2013
Messages
248
Location
mass
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My brunner I got for 20.00 on craigslist. Needed psi switch & some piping. Put 30.00 into it. I love it!!


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