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Old 02-10-2011, 12:15 PM   #1
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Water pressure issues


Hi all. First time poster. I am having problems with water pressure in my tub and shower(separate bathrooms sharing a common wall) Haven't noticed a prob at the kt or in either bathroom sinks?! The shower and tub have dramatic loss of pressure including hot water. When showering, the trickle like pressure goes scalding when a stool in either bath is flushed...? Ideas?
Thanks in advance!

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Old 02-10-2011, 12:56 PM   #2
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Welcome aboard Sodo70, to the best DIY"r site on the web

Sounds like the piping feeding the bathrooms is not large enough, and or the pressure isn't high enough on your entire system.

As you don't shower in your kitchen sink, I don't imagine you would notice the fluctuations in temp as much.

So you could either increase the size of piping to the baths or if you have a pressure regulator on the line coming in you could increase OA pressure, or you could install booster pump, or if on a well increase well pump pressure switch.

Mark

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Old 02-10-2011, 01:44 PM   #3
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Water pressure issues


Quote:
When showering, the trickle like pressure goes scalding when a stool in either bath is flushed...? Ideas?
Sounds like you don't have mixing valves in your shower. When a toilet is flushed, it draws all the cold water away from the shower, resulting in nothing but hot (untempered) water coming from the shower head for a few seconds. It's not pleasant.

As for your low pressure issues in the tub/shower there may be some thing in the shower head (mineral build-up) and tub spout (debris) that is blocking the flow. Remove the shower head and soak it in CLR for a few hours and un-screw the aerator from the tub spout then run some water and see if anything comes out.

Keep us posted on how you get on.
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Old 02-10-2011, 04:43 PM   #4
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Water pressure issues


Thanks for the quick responses. I should explain further. All of the plumbing in the master shower is new (mixer and shower-head). I just finished the remodel. The hall bath (that shares a common wall with the master bath) began to show the pressure problem several weeks ago (prior to the finish of the master remodel but weeks after the master remodel plumbing was finished...) When I attempted to use the new master shower, it showed the same problem that exits in the hall bath. We have been here for 4 years and there were no pressure problems from the old bath and shower mixers prior. I wonder now if a problem hasn't developed with the pressure coming into the house, into/out of the water heater, or the heater itself. ??? Hope this makes more sense and is a followable explaination. Thanks again.
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Old 02-10-2011, 04:46 PM   #5
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If it were a water heater problem it would only effect the HW, when you added the master bath, did you increase the line size feeding both bathroms to 3/4"?
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Old 02-10-2011, 05:01 PM   #6
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Didn't add a master bath, just replaced the original, rotting 3x3 shower...?
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Old 02-10-2011, 05:06 PM   #7
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You could put a pressure gauge on the CW main and see first what pressure you are dealing with, then see how far that pressure drops when you open the shower faucet up.

This is city water right? Is there a pressure regulator in the incoming line?
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Old 02-10-2011, 05:37 PM   #8
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It is city water. I took a pic of the main onto my house but can't figure out how to attach. Not sure if it has a regulator (or what that is).
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Old 02-10-2011, 05:48 PM   #9
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It looks similar to an outdoor valve that would feed the garden hose. 3/4 " feeding the main valve. 1/2 " coming out to feed the house. And, it appears to have a very slight leak....
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Old 02-10-2011, 06:26 PM   #10
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Just have to use the little paper clip on the upper toolbar of the reply box, have to resize the pics to be no larger the 620 x 280 I think it is.

How to post pictures?

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