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What causes good automatic float type air vents to leak?
Two Taco automatic air vents on boiler. One leaks. I tried cleaning it out and reinstalled but it still leaked. For the heck of it, I tried switching the autovents. The one that was leaking did not leak at the new location but the other (non leaking one) leaked in the leaking location. Switched back and the leak is because of the location; not the vents.
The only thing I can think of is there is more turbulence at the leaking location. I am thinking the fix would be to add a nipple to make it higher.
Did anyone else ever have this problem?