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View Full Version : Backflow preventor for compressor

Satatic
09-26-2005, 07:13 PM
Got a new backflow preventor for my compressor, couldnt be happier.
http://img.photobucket.com/albums/v334/satatic/other/Compressor/P1040137.jpg
Old to the left, new to the right.

No more 3/8 inch pipe in there. DEFINATE diference. Flow is so much better. Got from 0 to 80 PSI in like 4 minutes. I think thats pretty good considering the tank is about 120 gallons. I was expecting 40 PSI in that time frame when I unpluged it to check for leaks. Runs cooler now, its not trying to force all that air threw small holes. Plus the backflow preventor works, unlike the old one. All I need now is a air filter/housing that will screw onto a 3/4inch nipple and two new belts for the pulleys. Anyone know where I can find a filter/housing like that?
kartracer55
09-26-2005, 07:26 PM
Id be careful how much money im puttin inot taht thing. Its hugely inefficient because its not an air pump>>>>>not as efficent as an air pump.

Jim
Satatic
09-26-2005, 07:33 PM
Its seriously kicking ass though. I can run my DA all day with no problem at all, and that was with the old backflow preventer. I'm getting like double the flow now.
kartracer55
09-26-2005, 07:39 PM
Thats awesome... do you have access to aflow meter so you can calculate CFM?

Jim
dink
09-26-2005, 07:43 PM
Sheesh that thing is huge
Satatic
09-26-2005, 07:54 PM
Thats awesome... do you have access to aflow meter so you can calculate CFM?

Jim

No, are they expensive?
kartracer55
09-26-2005, 08:36 PM
Couldnt tell ya. Never bought one before

Jim
Luckydevil
09-26-2005, 09:10 PM
*Evaluating True Horsepower and CFM Ratings of Air Compressors:

http://truetex.com/aircompressors.htm
dink
09-26-2005, 09:38 PM
I want to clarify something in my brain...the backflow thingy keeps air from coming back into the tank through that one line correct??? Sorry I know nothing about compressors
79rallysport
09-26-2005, 11:07 PM
Its just a check-valve right? So air can flow into the tank from the compressor but can't flow backwards once the compressor stops pumping.
Satatic
09-27-2005, 07:31 AM
Its just a check-valve right? So air can flow into the tank from the compressor but can't flow backwards once the compressor stops pumping.

Yeah. So that way there isnt 110 PSI pushing on the pump while its trying to work. With no backflow preventer at all the motor really labors trying to turn the pump.