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Home water regulator
Question about my home plumbing.
Whenever I turn the hot water on in my bathroom it makes a loud noise in the pipes, almost as if it has too much pressure. This only occurs at this faucet which just happens to be the furthest from the water supply into the house. Question, anyone know the cause of this noise? My wife believes we need to replace the water pressure regulator (circled in the pic below). I had a plumber check the pressure a while back and all was good (checking for the sprinkler system). As you can see in the picture, the water pressure is 150. Thanks for your help. v/r Wayne C. 
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10-17-2009, 03:26 PM
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Join Date: May 2002
Location: Georgia
Posts: 3,169
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150psi is VERY high for pressure inside the house. Should be around 60-70.
Buy a screw on gauge from Home Depot and check the pressure at the faucet. If it is indeed this high, you need to get it down. The noise is called "hammering" You can get a hammer arrestor that can be put inline to help absorb the hydro shock wave that causes the noise. Get that pressure right!!
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10-17-2009, 04:00 PM
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Join Date: Dec 2002
Posts: 748
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That looks like a pressure relief valve rather than a regulator. In any case it's downstream of the gauge so even if it's a regulator the gauge reading isn't telling you anything.
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10-17-2009, 04:05 PM
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Join Date: Aug 2006
Location: SoFLA
Posts: 5,536
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+1 - The pressure regulator is typically at the service entrance. That looks like a pressure relief valve. Test your pressure at the faucet/spigot.
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10-17-2009, 04:08 PM
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Join Date: Jan 2000
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Funny thing is I just replaced mine a few weeks ago. I was suspicious because it kept bursting garden hoses. When I got the regulator from Home Depot it said about 150/lbs. Essentially unregulated even though I have a regulator. Seems my old one simply failed. Fortunately, the new one made by Watts was an exact replacement of the old one and the installer had the good sense to put shut offs immediately before and after so there was no sweating of pipes needed. Took maybe 20 minutes. Home water pressure should be around 55-80 lbs, I took mine up to 80 since its been tested at 150lbs for years with no problems.
 High pressure will take its toll on delicate seals in faucets. I actually don't see much of a difference in the shower. Washing the car is noticeably weaker.
Last edited by 89911; 10-17-2009 at 08:03 PM.. |
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10-17-2009, 04:42 PM
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Sorry, yes it is a pressure relief valve.
Thanks for the feedback, looks like I have a little work to do. I don't really like doing plumbing work, but oh well, gotta get er done! Off to Home Depot... Wayne C. |
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10-17-2009, 06:35 PM
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Join Date: Jun 2000
Location: N. Phoenix AZ USA
Posts: 28,967
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Cannot believe you guys have such high pressure. Ours is at 45-50 psi in this area.
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10-18-2009, 05:12 AM
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Location: North of You
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The pipes are likely not secured properly. That can be a very difficult problem to solve after the fact. There are pneumatic snubbers you can install, they absorb some of the shock when you turn the water on and off. Maybe under a sink in the bathroom? I would approach it from the 'noise end' as opposed to reducing pressure.
I assume you are on a well, judging by the pressure switch in the picture? |
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10-18-2009, 05:19 AM
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