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Moen shower valve--replaced cartridge, still no hot water

Asked Mar 23, 2012, 05:44 AM — 28 Answers
I have replaced the cartridge on a moen shower head valve but still only little water coming out but not hot water

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28 Answers
speedball1's Avatar
speedball1 Posts: 27,853, Reputation: 9560
Senior Plumbing Expert
  
#2

Mar 23, 2012, 06:14 AM


Shut the water off and remove the cartridge, Now turn the hot water back on for a minute to flush out the supplies. You should see a strong stream. Now do the same with the cold. If you have pressure reassemble and test, Better now? Good luck, Tom
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hkstroud's Avatar
hkstroud Posts: 8,595, Reputation: 3439
Home Improvement & Construction Expert
  
#3

Mar 23, 2012, 06:30 AM
Remove shower head and check flow to insure that shower head is not blocked.
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speedball1's Avatar
speedball1 Posts: 27,853, Reputation: 9560
Senior Plumbing Expert
  
#4

Mar 23, 2012, 06:44 AM


Hey Harold,
I'd agree that it might be a clogged shower head except for this,
Quote:
moen shower valve replaced cartridge still no hot wateer
Doesn't that indicate a fault in the valve? Your thoughts. Tom
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hkstroud's Avatar
hkstroud Posts: 8,595, Reputation: 3439
Home Improvement & Construction Expert
  
#5

Mar 23, 2012, 08:50 AM
Agree Tom
But also this
Quote:
still only little water coming out but not hot water
Would same strange if both side of valve blocked. Maybe jeking only tried one side, or maybe he means he has a little cold but no hot. Who knows?
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ballengerb1's Avatar
ballengerb1 Posts: 25,654, Reputation: 11296
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#6

Mar 23, 2012, 09:27 AM


Actually with only a little water coming out the pipes and water may not have a change to heat up. That hot water doesn't arrive instantly. I'd remove the shower head just to help narrow the issue.
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jeking's Avatar
jeking Posts: 10, Reputation: 1
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#7

Mar 23, 2012, 09:39 AM
Oh, I am sorry. What I meant was the cold water side is very strong coming out of the shower head and lower faucet. However, the hot water side is what trickles only and not hot at all.
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hkstroud's Avatar
hkstroud Posts: 8,595, Reputation: 3439
Home Improvement & Construction Expert
  
#8

Mar 23, 2012, 09:56 AM
OK, go with Tom, blocked hot port side of valve.

When reinstalling cartridge do it in the open position to let the air trapped in the body of the valve out. Makes getting the cartridge back in a lot easier.
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ballengerb1's Avatar
ballengerb1 Posts: 25,654, Reputation: 11296
Home Repair & Remodeling Expert
  
#9

Mar 23, 2012, 10:18 AM
Yes. all 3 of us would work on the hot inlet of the cartridge. With the water off, cartridge removed, towel tightly held over open valve body, have someone turn the main valve on and OFF to let the water flush the lines and valves. Then clean the cartrdige ports.
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jeking's Avatar
jeking Posts: 10, Reputation: 1
New Member
  
#10

Mar 23, 2012, 01:54 PM
My rental hot water tank leaked and flooded my basement. Please advise if it is wise to buy my own water tank than to continue renting a hot water tank.
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