Trap Primer

[Jim Robinson]

Are these pressure activated trap primers adjustable? There did not appear to be any water coming out of the trap primer no matter what we did inside the house.

Also, how exactly do they work? Is there some type of spring and diaphragm set up inside?

[A.D. Miller]

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[Jim Robinson]

I think I figured out my problem. The trap primer is on the boiler feed line, which wouldn't change pressure very often, if at all, especially on the back side of the check valve. The primer should have been put on one of the cold water supply lines running into the house.