What is this part and what does it do?
Noticed some damp folded towels in the small cabinet under the sink in the bedroom and assumed I had a leak from the p-trap or something sink related. Turns out this (pictured) device has an occasio...
Forum Discussion
srosa wrote:
I ruined one by leaving a garden hose hooked to the flush inlet on a very hot day. The end of the hose was plugged by a closed spigot and the pressure ruined the check valve. Water then backed up into the valve when flushing the tank and it leaked. The tank flush quit working too until I replaced its backflow preventer. I went with a brass one instead of plastic. Works great again with no leaks.
That makes no sense, the check valve lets water into the black tank and would not block a pressure build up unless it had already failed, and pushed the seal to the other side of the valve. The one on my hot water tank failed like that and would not let hot water out.
The OP picture shows both a check valve(white plastic piece like is used on hot water heaters), and a vacuum break(brass piece) that just lets air in the line when the hose is disconnected. Chris
