Originally Posted by JLeising
A thought I have had on this issue - I believe the internal water filter is plumbed AFTER the water pump. By so plumbing the internal filter, it filters both tank water and shore water. As a result, however, unfiltered water flows through the valve in question. I suspect dirt or sand could enter the valve and result in the valve sticking open. I use one of the "blue bullet" water filters whenever I hook up to shore water and when I fill my fresh water tank - avoids any "dirty water" flowing through the pump/valves.
There is a screen on the inlet of the pump. I don't think we used to install it (years and years ago) but I recall that when we started, we found out it lengthens the water pump warranty with that installed.
Maybe it went from 1 year to 2 years.
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