Home>Discussions>BATHROOMS>Moen posi temp cartridge shower comes on without pulling knob on spout
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Craniac
Moen posi temp cartridge shower comes on without pulling knob on spout

Why does my shower turn on in certain places as I dial in the temperature of the bath.? It happens before I even pull the knob on the tub spout !! I replaced the moen 1222 posi temp cartridge hoping for a solution. Not fixed. So frustrating. What do I do?

dj1
Re: Moen posi temp cartridge shower comes on without pulling knob on spout

Moen 1222 Posi temp is a pressure balance faucet. The water comes on when you rotate the handle left or right, not by pulling it out. No water flows when the handle points down.

johnjh2o
Re: Moen posi temp cartridge shower comes on without pulling knob on spout

That will happen is PEX or CPVC pipe was used between the faucet and the tub spout. Both PEX and CPVE have a smaller OD than copper. I believe the instructions on the faucet have a warning about use PEX or CPVC.

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