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I have extremely low pressure from my Moen Posi-Temp 1222 shower valve, but otherwise it functions well. Should I replace the posi-temp cartrige?

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Hi Ken--
Positemp cartdiges should deliver years of maintenance free operation. Usually, clogs develope downstream from the cartridge. If the cartridge still works well, that is, if it still pulls and turns freely, and the rest of the house has decent water pressure, check your shower head. Remove the head and test the water pressure. If the water flows better without it, you may have a clogged shower head. Over time, rust and scale can build up inside the shower head and block what would otherwise be decent water pressure. If a visual inspection does not yield any visible blockage, you can consider cleaning the head by soaking it in a calcium removing solution such as CLR. This often helps, but my preference is to replace the shower head completely.
--Hope this helps.

Posted on Oct 07, 2010

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coming from the uk it sounds that when you mention it leaks at night its a possibility thats when the water pressure increases & the valve starts to drip?

i know its not a solution but it may help you understand why its dripping at night.

Also the seals might be damaged in which case thats why its dripping check them for damage. make sure when you put the new cartridge in that you put some silicone grease around the seals as this helps the insertion & helps protect the seals from damage.

Kindly

Richie

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