The hot water supply line brass seat fitting leaks where it enters into the concave section of the Pfister mixer valve for a tub/shower faucet. I have cleaned both surfaces with emery cloth and wire brush, tried wrapping with teflon tape, also tried pipe thread compound, but it still leaks. The faucet is about 20 years old. Looks like it has been dripping on and off for some time. I have pictures of the valve and fitting I can send. I even heated up and removed sweated male fitting the brass valve seat threads onto and made sure everything was square and resoldered that joint. I am wondering if there is a tiny crack in the valve seat. Any ideas?
Plumbing – How to get the supply line brass valve seat on Pfister tub/shower mixer valve to stop leaking
plumbing
Best Answer
Don't know about that particular model but I have brass seats as well. I had a leak and carefully replaced washers on both sides properly. Still had a small leak. Replaced both valve seats (only $4 each so why not) even though I knew it was clearly the cold leaking. Checked and double checked and examined seats and washers carefully -- nothing odd. Still leaked. Finally cut some teflon tape lengthwise to match the width of the threads on the seat and wrapped kinda taught 2.5 times around. Put them back in and torqued fairly firm but not overly hard. Leak was fixed.