Those are your valves when winterizing your coach, you drain the water lines through those valves. There is not much to those little valves. Take a close look at them or it and you will find that all it is, is a pull type plug with a O ring with a wire clip. It might just need a little twicking or replace the O ring.
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2002 Gulf Stream Scenic Cruiser
2018 Buick Envision Essence
Neway Freightliner chassis
Aventa II Blue Ox
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