Water Pump Question

The check valve is to keep city water from back filling your fresh water tank. Check and make sure that the suction line from the tank and to the pump are tight, if a little air is allowed to get in it will keep the pump from shutting off when the taps are closed. It could also be a bad shutoff swich.

jodeb720 wrote:
It's pumping water - and works ok - it's just not turning off when it reaches pressure.

Interesting that the pump head has two "blue Releases" where the inlet and outlet connections meet the pump head.

Flojet uses quick release connections to the pump, Shurflo uses 1/2" threaded NPT fittings. Repeating myself, but now that we know it does work just turn it off when not needed for the time being and deal with this later when you get home.

It's pumping water - and works ok - it's just not turning off when it reaches pressure.

Of course, as I pulled the panel access off, and got to see the pump, it's a flowjet not a sure flow head, and now it's working. There must be something in the pump head that needs to be cleaned.

Interesting that the pump head has two "blue Releases" where the inlet and outlet connections meet the pump head. I'm going to stick my hand in with my cell and video tape the model number to see which one I have. Those pesky owners manuals do you a lot of good with model numbers (or online since my owners manuals are at home).

Agree with SG. Amazon has the replacement parts you need.

jodeb720 wrote:
As I'm here in Yosemite, my water pump has decided to not stop running when all the taps are closed.

If it's still pumping water (and you haven't said it isn't) I'd just leave it as is for now and deal with it when you get home, assuming you're not full timing. Just turn the pump switch on when you need it, otherwise leave it off. These are run dry pumps so you're not going to harm it in any way and surely it will be much easier to identify the true nature of the problem and correct it properly once you're home again. ;)

IS pump running continuously ???

OR Cycling on/off?


Running continuously.....that sounds more like pump pressure switch not Opening/pressure low or something is still open


Cycling on/off....could be pump internal check valve or leak

Thanks Drewe - I'm on gravity fill right now - so I'll need to pull it out and clean it good. These RV's never just run themselves, do they? LOL

Thanks again for the prompt response.

The check valve is typically part of the diaphragm assembly in the pump head itself; it's not a separate component. That pump head part would be the bit to disassemble and clean if needed, or alternately install a separate check valve in the suction line to the pump.

Before going to heroic lengths, check that you don't have a city water fill valve that's not closed fully. Obviously that doesn't apply if there is no city water fill (and solely a gravity fill).