Forum Discussion
azbohunter
May 13, 2014Explorer
Old-Biscuit wrote:
The Shuflo Extreme series pumps do not have internal check valves....just a 4 Chamber Diaphragm Valve Assembly.
I would suspect the 'fresh water fill' valve on your water panel is leaking by, your fresh water tank overflowing when on city water makes it suspect, and you have replaced pump diaphragm assembly already.
System pressure drops enough for pump to start/stop and your pump 'burp' is pump start/stopping to get pressure back up.
Are you using a 'pressure regulator' when hooked up to city water?
Extreme Series.......
Classic Series......
I usually do use a pressure regulator but even when hooked up to water supply with known low pressure it does the same! I suspect the water fill valve also, I will have to look more into that. I have disassembled it, wiped it clean and put a little petroleum jelly on the o-ring. It looked good but.....
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