Quote:
Originally Posted by 16ACE27
The check valve at the city water inlet stops water from going out that connection when you run the pump. It would have nothing to do with the OP's problem.
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Not talking about that check valve. A water pump is, essentially, two check valves in series between the piston--at least a reciprocating pump is. The check valve
in the pump. Even if the pump isn't reciprocating its going to have a check valve to keep pressure in the system when the pump isn't running.
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