Hi, I don’t know your coach at all, but I would check your water pump location for any signs of drain valves on either side of the pump (could be pull up style valves or turn style valves). Fresh water drain would be on the low pressure side of the pump (filter side usually), or it may drain through a winterization port (where the water pump is used in Fall to pump pink antifreeze into the coach water lines). I assume you already checked beside the fresh tank outlet itself? Worst case is crawl under the trailer and see if you can see drain tube(s) extending slightly through the floor and try to track it/them back inside the coach to find the valve. Start under the coach near the fresh tank location or water pump location (and then look everywhere else). Lots of fun getting to know and inspect places you may not have been before.
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