Question about Air Tools & Compressors
When I turn on my air compressor, there is a leak on the side of the discharge non return valve preventing air to accumulate in the receiver. It appears that the check valve had a pinhole deliberately drilled inot its side, si that common? Should there be a hole on the check valve on the outlet of compressor beore entering the receiver?
If this hole looks factory drilled thats what the valve is for and is weak and needs to be replaced if someone has drilled it into the valve it will still need to be replaced
Posted on Oct 07, 2008
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Posted on Jan 02, 2017
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It could be that the input air filter is badly clogged. I might more likely be that the Non-return valve on the air tank input is not sealing properly and not allowing the tank to build up pressure. This valve is at the end of the main pipe runs between the compressor and tank. It could also mean (less likely) that the poppet valves inside the compressor cylinder head are not sealing properly. Other faults could be worn rings on the compressor pistons or a bad seal between the compressor cylinder head and block.
To check the Non return valve allow compressor to build up some pressure and then loosen union nut on Non return valve. There should be some air released at first but should stop if valve is ok. If leaking remove valve and check for dirt and clean. If valve still leaks replacement is the only fix.
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