Curious sink behaviour
After filling the freshwater tank for a trip, I ran water in the bathroom sink. It didn't drain - filled it about a third full with no plug in the drain hole. I figured there must be a block in the ...
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bdpreece wrote:
In RV's rather than plumbing each sink into the vent stack they use a vacuum breaker mounted under the sink. It sounds like yours is sticking.
X2 somewhat common occurrence
