I have an older 3-handle system in my bathroom shower: hot, diverter,
cold. The water was never quite shutting off all the way - more than
a drip, slightly less than a constrant stream. I took the handles
off, pulled the valve stem out and took it to Home Depot and matched
it perfectly. I took them home and removed the valve seat, put the
new valve seat in (I couldn't get the hot water valve seat out but it
looked pretty good so I left it), put the new valve stems/bodies in
and there's no change. I turned the water on to each handle one at a
time and they both still leak. If it was just the one with the old
valve seat I could maybe see it but the new one is just as bad.
Any ideas on :
1. what I might've done wrong (going to HD notwithstanding]
2. how to fix ?
Did you apply sealant to the seat threads? If not,
even a perfect seat will leak.
I don't like Teflon tape in this application;
too hard to wrap and be sure it's on there.
A good pipe dope is better.
The hot side is the seat that usually goes;
I would change it too,.
You didn't say where it leaks. If it drips from the spout then as Jim
suggested, seal the threads on the seat. We are also assuming there is a
washer on the end of the new stem.
Now, if the leak is from behind the handle then you have a problem with the
packing. You can get some graphite packing and wrap the stem and then
tighten up the stem nut.
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