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Old 05-16-2015, 05:22 PM   #6
hankaye
Senior Member
 
Join Date: Apr 2011
Location: Arrey,
Posts: 2,368
Howdy All;

Quite a few water inlets DO have check-valves,
http://www.amazon.com/JR-Products-96.../dp/B0002UHVX2
keeps the onboard pump from pushing water out the inlet.

Some don't, like the ones for the flush system. I keep one of the brass
valves attached to the Y that gives me both fresh water for daily use
and for when I hook the flush hose up to do that weekly chore I need to
do as a full-timer.

hankaye
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