My guest bath's shower developed a slow leak (about 5 gallons per day). I replaced the cartridge and it stopped for about a month until someone used the shower, then it began to drip again. I just replaced the cartridge again and there was no leak when I first turned the water back on, but I turned it on to make sure it worked, and it started dripping again.
The first cartridge I replaced was only about a year old. I had a plumber do it because I could not get the old one out. When I replaced it last month, it was very difficult to get out and there was a divot in the oval ring, but that may have been caused when I removed it. The one I just pulled out looked fine.
I flushed it both times. The first replacement I scrubbed the casing and let a vinegar soaked rag sit inside it for 30 minutes or so. This time I just wiped it out with a paper towel and visually inspected it--no signs of damage.
I'd really like to not have to call a plumber, but I think cutting open the walls and replacing the valve casing is beyond my DIY skills.
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from DIY https://ift.tt/3d4qI5c
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