Greg:
Thanks for the info regarding location of the fresh water tank drain valve on our 2013 2910T. I removed the mattress & located the box containing the valve. I'm assuming the drainage valve is the brass one (picdture attached). Probably a stupid question, but since I've never drained the fresh water tank, here it goes. When I turn the valve the quarter turn (so it is perpendicular to the coach, do I turn on the water pump to empty the tank? I turned it, thinking it was a gravity-fed empty, but obviously nothing happened. So, I figured I'd contact you before doing anything else.
Thanks,
Bruce Clerico
Orlando