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Old 03-11-2013, 09:51 PM   #1
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Bathtub Plumbing Mystery!


Hello DIYchat! I have come across quite a dilemma with my bathtub. The setup: A one-lever control for hot/cold with an overhead shower and lower shower faucet/spout. The problem: I have been having very low volumes of water coming through both for a solid month. When I remove the valve body, the water supply flows extremely well. When I attach the body and reconnect the supply to the diverter and vertical water pipes, it dribbles out, even if I just let it flow through the spout. Attempts to fix: 1) Replacing the shower water body/valve. I even checked the insides of the original body, which were pristine and had no flakes/buildup. 2) The shower head and spout themselves are also clean and do not have any obstructions. They work perfectly on other showers. 3) I tried to flush the vertical water passage (from the body/assembly and diverter to either the spout or showerhead. -to do this, I took a fitted tube and hooked it up to the direct water supply. I then fitted the other end to the top of the shower head (where water is supposed to come out. The water flushes back down the vertical passage/pipe to the spout in a perfect flow. If I reverse this water flow, it dribbles back out again. My suspicion: Could the diverter be clogged between the valve body and the vertical passage? I figured that this would show signs when I reversed the water flow, but it doesn't make sense to me Thanks in advance, chaps.

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Old 03-11-2013, 10:00 PM   #2
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Originally Posted by caonashi View Post
Hello DIYchat! I have come across quite a dilemma with my bathtub.
  • The setup: A one-lever control for hot/cold with an overhead shower and lower shower faucet/spout.
  • The problem: I have been having very low volumes of water coming through both for a solid month. When I remove the valve body, the water supply flows extremely well. When I attach the body and reconnect the supply to the diverter and vertical water pipes, it dribbles out, even if I just let it flow through the spout.
  • Attempts to fix:
  1. Replacing the shower water body/valve. I even checked the insides of the original body, which were pristine and had no flakes/buildup.
  2. The shower head and spout themselves are also clean and do not have any obstructions. They work perfectly on other showers.
  3. I tried to flush the vertical water passage (from the body/assembly and diverter to either the spout or showerhead. -to do this, I took a fitted tube and hooked it up to the direct water supply. I then fitted the other end to the top of the shower head (where water is supposed to come out. The water flushes back down the vertical passage/pipe to the spout in a perfect flow. If I reverse this water flow, it dribbles back out again.
  • My suspicion: Could the diverter be clogged between the valve body and the vertical passage? I figured that this would show signs when I reversed the water flow, but it doesn't make sense to me Thanks in advance, chaps.
Here is a picture I drew up of how I tried to fix it.

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Old 03-11-2013, 10:01 PM   #3
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Bathtub Plumbing Mystery!


has the hot and cold water supplies been checked when you tried flushing without valve in. what brand and model is fixture
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Old 03-11-2013, 10:04 PM   #4
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also was the hot and cold turn back on after new valve assembly replaced old and did you make sure it was put in correctly not up side down
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Old 03-11-2013, 10:06 PM   #5
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Bathtub Plumbing Mystery!


Thanks for the quick reply!

The hot & cold water supplies are perfect without the valve.

The brand is unknown, because we moved into the house not too long ago. I'll try to find one like it, but I don't think it's the fixtures (just my guess).
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Old 03-11-2013, 10:15 PM   #6
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take the faucet off and plug the pipe off. if it flows good by a new faucet of clean the old one in lime away of mineral deposit remover.
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Old 03-11-2013, 10:36 PM   #7
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Bathtub Plumbing Mystery!


Problem may be within the balance control piston if it has one.??? picture or make and model of faucet, would help.
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Old 03-11-2013, 10:41 PM   #8
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Unscrew the shower head and see what happens.
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Old 03-11-2013, 11:11 PM   #9
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Unscrewing the shower head and doing what? Just let it flow out?

Here are a set of pictures I took just now:
http://imgur.com/cgPEXqc,M3Pv6UI,NfF9Iok,VwwtWd7
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Old 03-12-2013, 08:16 AM   #10
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Looks like a Delta. Post a picture of the controle cartridge. Did you mess with the temp setting?
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Old 03-12-2013, 09:42 AM   #11
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Some cartridges have a screen inside the cartridge itself. Did you check this?
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Old 03-12-2013, 08:47 PM   #12
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I did open up the cartridge and check the filter; again, no dice.

I didn't mess with any temp settings that I know of.

Here is a picture of the controller. I'm a bit tired of this whole ordeal and will probably call the specialists over. Maybe one of you guys can logic this one out, but I'm stuck.
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Old 03-12-2013, 08:49 PM   #13
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Quote:
Originally Posted by mech_gui View Post
take the faucet off and plug the pipe off. if it flows good by a new faucet of clean the old one in lime away of mineral deposit remover.
I cleaned the original one with limeaway regardless and didn't see much debris coming off nor a change in performance.
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Old 03-12-2013, 08:50 PM   #14
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Originally Posted by Javiles View Post
Problem may be within the balance control piston if it has one.??? picture or make and model of faucet, would help.
I posted the pictures, didn't see anything that I would recognize as a balance control piston, then again I'm not a pro in plumbing.
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Old 03-12-2013, 08:51 PM   #15
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Originally Posted by jaydevries View Post
also was the hot and cold turn back on after new valve assembly replaced old and did you make sure it was put in correctly not up side down
No, it was right-side up and both hot & cold were turned back on.

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