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01-13-2005, 02:35 PM
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#1
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2 Rivet Member
Join Date: Dec 2004
Posts: 52
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valve
Any tips or pitfalls changing out a Moen mixing valve? I decided to either buy a kit or if kit is not available, the complete assembly. My problem is that I have to turn the mixing valve completely counterclock wise ( till it stops) to get a trickle (will not go out of showerhead) of hot water. the hot water pressure on the other faucets is weaker than cold pressure but is workable. I have bypassed the HWH but doesn't help. I also thought about removing the in-line prv as low pressure might be a factor. The prv is currently screwed in to city water hose bib and is an inline type similar to those sold at Walmart. I havn't looked to see if there is another one hidden away somewhere that might be the low pressure culprit.
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Ga Pockets
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01-13-2005, 03:39 PM
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#2
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Rivet Master
1967 26' Overlander
Huntsville
, Alabama
Join Date: Dec 2003
Posts: 3,021
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The first place to check if you have low pressure water coming out of the faucet is the screen/aerator that screws on to the very end of the faucet where the water comes out.
I assume prv is Pressure Relief Valve? If it is bad, you will know it because it will be relieving water everywhere.
A picture of your situation(s) would help immensely.
Tom
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01-13-2005, 06:59 PM
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#3
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Rivet Master
Join Date: Mar 2002
Posts: 1,486
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The condition you describe is not the Moen valve, per se. Somewhere you have a blockage. As noted above, first clear out the aeator screen. Next, pull out the cartridge and remove any debris found there or in the faucet itself. If this doesn't work, start backwards from the water inlets and disassemble all connections. Small bits of rust and gravel and whatnot like to collect in connectors, particularly Tees.
Good luck,
Mark
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01-13-2005, 07:15 PM
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#4
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3 Rivet Member
2004 25' Safari
1971 27' Overlander
1957 22' Caravanner
Jourdanton
, Texas
Join Date: Nov 2004
Posts: 215
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Sounds very similar to a problem we had where all hot water flow was lost in the shower. First I checked to see that water pressure was available at the shower valve inlet. After that, a call to Moen customer service (1-800-289-6636) got very clear verbal instructions on removing the cartridge and then removing the cartiridge internals and cleaning. When put back together it worked fine. One word of warning - have a spare cartridge retaining clip on hand. It is very easy to lose the installed one between the wall pieces.
Jim
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01-13-2005, 07:36 PM
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#5
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Rivet Master
2016 25' Flying Cloud
Sunnyvale
, California
Join Date: Jul 2003
Posts: 1,894
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Not difficult..
GA Pockets..
Another exchange between owners of '88's...
Advice to find out first if pressure is OK getting to faucet or is lost in faucet is solid.. Aerators on end of faucet do get really clogged with tank water and some city water stuff, or your upline filter could also be clogged..
Advantage of Moen plumbing faucets and valves is that you can find or order parts via many hardware and Home Depot/Lowes kinds of places, instead of RV stores with different markups... Do disassembly first (keep white towel on floor to catch springs and clips that will otherwise sproing into the ether...) and then take troubled looking parts to store to match...
We had separate hot and cold faucets (rather than mix valves) in bathroom and kitchen, and we swapped out for std residential sinngle lever units in bith places... Now if only I can figure out how to rebuild or stop annoying drip from shower valve...
John McG
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Condoluminum
In Theory, there's no difference between Theory and Practice, but in Practice, there is usually a difference...
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01-14-2005, 08:04 AM
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#6
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2 Rivet Member
Join Date: Dec 2004
Posts: 52
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Thanks all, I used to spend a lot of time on rv.net.......this forum is the best! None of the "my dog is better than your dog crap!".
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Ga Pockets
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01-15-2005, 01:03 PM
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#7
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2 Rivet Member
Join Date: Dec 2004
Posts: 52
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Valve
Update, If all else fails read service manual! I took valve apart just to see if there was trash(none) however service manual gave instructions on adjusting flow for hot and cold.........just needed a5/64" allen wrench and all is good with the world.
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Ga Pockets
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