Forum Discussion
Old-Biscuit
Sep 07, 2015Explorer III
cameronpatentlaw wrote:
Also, it may be a one way valve or diaphragm that did not reopen--it is in the drain line under the sink. We had that problem last week as documented in our blog, which is referenced in my profile. At first we thought it might be a full gray water tank too. It was not. Good luck.
OP stated he had 'P' trap.
You referenced a one way valve........are you saying you don't have a 'P' trap but a bladder valve trap known as a Hepv0 (self sealing waste valve)


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