Drain valve for what?
Let's try this again. This is obviously a drain valve, but from what? Inside the street-side forward storage compartment, next to the water heater, on my 2014 FLying Cloud 25 FB. Cant see where the line originates. The pex turns down just to the right of the valve and exits about 2" under the deck and is not capped. May be a low point drain. The owners manual has no plumbing diagrams and doesn't identify this valve specifically.
Will ~ "Blue Skies"
"Don't follow me.
I've spent my life leading folks astray."