Originally Posted by Andy Vidra
Curious and curiouser. I disconnected the plastic fitting at the output where it attaches to the check valve and a small plunger-like plastic piece fell out. There is absolutely no evidence of any precipitate blocking anything. Any ideas about how I should proceed?
I don't think those check valves are repairable. Carefully remove it and take it first to a home repair or plumbing supply house and see if they can match it. If they can't then take it to the parts desk at an RV dealer/repair shop. (A lot of the bits and pieces in our TT's can be found on the shelves at Home Depot, Lowes, etc. and much less expensive than at an RV shop.)
A quick look in the go-rv.com catalog finds these. They're pretty standard plumbing parts so you may well find them at Lowes, etc.
Marshall Brass is very common stuff.
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