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Help Identifying Air Compressor Valve

O0oDC

New member
Joined
Jun 11, 2018
Messages
1
Location
Vermont
Hey guys,

I just bought an air compressor off craigslist and am having some issues. The compressor seems pretty old, its a 60 gallon 2 stage 3hp compressor if that helps at all. I don't know much about compressors so bare with me here while I try to explain things. The compressor seems to be leaking out of an adjustable ball/spring valve on the front of the pump. This happens even after the motor/pump is off, which tells me that the tank is leaking (I can't get it to build enough psi to shut off). I've learned that there is a check valve between the tank and pump that is probably bad. I removed it and it looks nothing like any other check valves that I've been able to pull up online. The standard one seems to have a third smaller port on the side of the valve, where this one does not. I've attached some photos below, if you recognize this please help me out!


34366880_10156781535007526_1582983035291172864_n.jpg


34537615_10156781535487526_3469695948618203136_n.jpg


34562238_10156781536802526_8794485841150869504_n.jpg
 
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pcmeiners

Well-known member
Joined
Aug 13, 2009
Messages
7,831
Location
In the only town in Pennsylvania, Bloomsburg.
Poppet check valve, often used on older compressor setups, generally higher flow rates, less leakage then other. Replacement part will be near impossible to get. Purchase a Kennedy valve of this type years back. CDI and United Brass also manufacture
this type.

Similar to this valve...
https://www.ebay.com
/itm/New-3-4-CAST-brass-horizontal-check-valve-air-compressor-in-line-vertical/190676679937?hash=item2c65373d01:g:QtEAAOSw-jhUBLb3
 
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joe_padavano

Well-known member
Joined
Feb 26, 2011
Messages
1,788
Location
Northern VA
It's just a check valve. Unless you care about appearances, just replace it with a newer valve with an unloader port.
 
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