Water Pump Question
I installed a Shurflo 4008 pump in Oct. 2015. I've had three different occurances, when hooked to city water, that the fresh water tank has filled to overflowing while connected. In two instances the ...
Forum Discussion
gb76087 wrote:
Okay, my next question is if
"Pump has a 'Bypass' Spring Loaded Diaphragm that begins Opening at 30# and is FULLY open at 65# (should not reach full open position)"
the city water pressure is 45psi, what keeps the diaphram from opening(45psi>30psi) and filling the fresh water tank?
Due to pump design....bypass opens based on pump discharge pressure NOT pressure from city water use.
Bypass diverts pump discharge back to pump drive assembly which is upstream of pump check valve diaphragm
Water leaking back thru pump is due to pump check b=valve not fully sealing....debris OR swollen
