Air compressor started leaking down and I traced it back to this. What is this? It’s got a very small drilled hole in the top of that bolt. I’m guessing some sort of pressure relieve valve? It’s an 11 year old Husky compressor.
CK5
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What is this?
- Thread starter centexk5
- Start date
It’s not from the threads. It’s through the tiny hole.
That was next step. Just figured I'd ask to see if someone knew.
look like a check valve. No idea why the cap would have a hole.
Edit I take that back. If it is a check valve, to keep air in the tank then that tiny hole is relieve pressure in the head line.
If it leaks after pump shut down, the check valve is leaking.
Edit I take that back. If it is a check valve, to keep air in the tank then that tiny hole is relieve pressure in the head line.
If it leaks after pump shut down, the check valve is leaking.
Any problems with the threads there will only leak while it's pumping, so you probably wouldn't even notice a small leak. If air is escaping while not pumping, the check valve is bad, as @Wes Harden said. Otherwise, the leak would be at the front of the outlet is. Check valves are wear-items, as they rattle open and shut when the pump is running. I remember replacing mine a couple of times now, but I may not be getting a good brand.
