Dump valve won't close all the way
My black tank dump valve suddenly started not closing all the way. About 1/4" left to go on the shaft. I tried opening and closing it several times, but no luck. I'm guessing maybe TP is stuck in t...
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I had the same problem awhile back. I opened the valve and flushed several times before disassembling the valve to find out why it wouldn't close. I found the disk from the hole the builders cut into the tank for the toilet jammed in the valve. There's no way for it to pass through the dump valve - it could only be removed by taking the valve apart.
