Water pressure adjustment


  #1  
Old 06-25-23, 09:13 AM
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Water pressure adjustment

Hello all - I accidentally discovered that the water pressure in my townhouse is 100 psi. I know this is not a good thing so I am looking to drop it to 75 psi. Here is a photo of the regulator, and I seek help in how to adjust downward without causing a disaster. Can't afford disasters lol.

I think I have to loosen the nut, and screw OUT to reduce the pressure but just want to be sure. Also, how much turning should I do between pressure checks?. Should I shut off the water completely before the regulator?. I have ball valves on both sides. This is original from the builder (2002). Not sure why someone painted all over it.



Thanks in advance.
 
  #2  
Old 06-25-23, 10:51 AM
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I can't never remember which direction to turn it so I attach my pressure gauge to a hose bib so I don't go too far the wrong way. You can buy one at any big box for $10-$15.
 
  #3  
Old 06-26-23, 04:18 AM
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I pretty sure that turning clockwise increases pressure.
 
  #4  
Old 06-26-23, 06:29 AM
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Generally you remove (turn counter clockwise) the screw to lower the pressure. If using a pressure gauge you won't see the pressure drop unless water is being used somewhere in the house to relieve the pressure. If you are adjusting the pressure up, you would see that on the gauge, but down you have to run water to see the drop.
 
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  #5  
Old 06-26-23, 10:38 AM
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Don't be too surprised if turning the adjustment screw doesn't do anything.

I've never run across a PRV that just increased pressure where an adjustment can bring it back down. More likely, the PRV failed and will need to be rebuilt or replaced.

(Of course try adjusting it - hopefully I'm wrong!)
 
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  #6  
Old 06-26-23, 03:35 PM
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OK thanks. I'll have a stiff drink, say a prayer, and go counter clockwise. I starting to think this regulator is toast and should be replaced, but I'll give it a shot.
 
 

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