POA Valve test with results

[Emdoller]

I just finished testing 2 POA valves one that's NOS and another that's been used.

When I tested the used one, I slowly cranked up the pressure on the inlet and when It swung past 30lbs to about 40 or so ( wasn't paying attention to the exact point) I heard a pop and a went back to 30 lbs and stayed there. I could repeat it over and over with the same results.

On the NOS valve, as I turned up the pressure it would stop right at 30lbs with no POP sound. Or it was so low I couldn't hear it. I did it several times with the same result.

Is the NOS POA working correctly?

Thanks!
Ed

[Dougflas]

The new one is working fine. The other may be sticking. Sometimes they can be brought back to life by pouring oil in them and letting them sit.

[Emdoller]

Thanks. I thought it was the other way around as I was taught that you needed to hear the pop.

Thanks!!
Ed