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Old 10-09-2011, 09:59 AM   #1
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Water pressure leak

I'm having a problem with my fresh water pump not shutting off. The city water hookup is leaking so I going to assume that this is my problem. There's got to be some kind of one way valve between the water tank the city water hookup and the pump. I can't find it . What am I missing?
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Old 10-09-2011, 10:12 AM   #2
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You may have your valve set to 'tank fill' in the water supply compartment.
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Old 10-09-2011, 10:14 AM   #3
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The city water hookup is the check valve to keep from filling the fresh water tank. However, that should not make the pump run, unless the tank is empty and the switch for pump is on. The check valve is easy to replace. My MH is slightly newer and I have a switch in bathroom. I guess for emergency use. Also switch on master panel by my door.
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Old 10-09-2011, 11:04 AM   #4
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My water tank is full. When it leaks from the city water hookup the pump won't shut off (does not happen all the time ) I'm thinking its not able to reach the pressure needed to trip the cutoff. I'm just not understanding how it all works. There's a separate opening to fill fresh tank so no valves to mess-up there
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Old 10-09-2011, 11:09 AM   #5
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The city water connector is on the output side of the water pump therefore it has a built in one-way valve. It closes when you turn off city water and/or remove the city water hose. As long as it's leaking, the pressure in the system keeps getting bleed off resulting in the pump running. You have to replace the city water connector in order to solve you problem. It acting just like a leaking faucet in this case.
Here is a good description of a typical system like yours. http://www.marxrv.com/plumbing/plumb.htm

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Old 10-09-2011, 01:57 PM   #6
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For a quick fix, get a hose end plug and screw it into the city water connection.

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Old 10-09-2011, 04:33 PM   #7
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Like TXiceman said a plastic waterfill plug would work well too. I always use one when the hose is disconnected for sanitary reasons. Keeps dirt and bugs out of the connector. A cheap investment.

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Old 10-09-2011, 07:05 PM   #8
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Thanks All I needed was a visual to grasp. The plug that's on it now is a push in keeps stuff out but doesn't seal real well. I will try a plug it will let me know for sure
if this is my problem.
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