Originally Posted by ninjahbob
Try looking under your bathroom sink cabinet. If you see the drain hose out side the valve should be inside and above. It will be a push and pull valve. Hope this helps.
These would be the low point drains to drain the plumbing lines.
The FW drains are probably also labeled "low point drain", but the valves will be on the outside of the trailer near the FW tanks (look in the area immediately surrounding the gravity fill inlet). If you just see unfitted hose ends under your trailer, these will be either breather hoses for the tank, or they'll be the plumbing system LP drains with valves located somewhere inside. You're looking for a small plastic valve on the outside of the trailer that looks something like this:
Amazon.com: Camco 22223 Drain Valve - 3/8" or 1/2" Dual Barb with Flange: Automotive
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