AnEv942 wrote:
Agree sounds like low point drain
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Our low point drains/hot cold lines, terminate with female fittings, use simple 1/2" pvc pipe thread plugs. We do not have valves.
If there were any place near you, threaded cap or threaded coupling with plug should be easy to find.
Possibly if in park, store or maintenance facility or even other campers may have something. I had one disappear once so carry spares. Wouldnt hurt to ask Don't overtighten.
Yes, other than color that location looks the same. My ends are different, naturally. With the drain port idea I have started googling that and I’m thinking I may go to the ball valve web suggestion.
Can you confirm that assuming it is an uncapped drain port that without the cap the water will just run through as my symptoms show?