Pressure Reducing Valve Question

[MDSPHOTO]

Our small well water system was just bought by a larger water system who hooked us up to their main lines today. Our pressure shot up from 60 to over 100. I backed the screw out of the PRV as far as it would go, but I'm still getting readings over 90, recommended pressure is 55-75. Any suggestions for getting that pressure down into that normal range?

 

[jubilee]

Change out the pressure regulator for one that works?

 

[manwithtools]

Also be sure you have a thermal expansion tank in line after the pressure regulator. Heating the hot water can cause the pressure to rise on the house side of the regulator valve.

 

[Milton Shaw]

Agree with man with tools, make sure you have an expansion tank Your water heater can let pressures top 150 or more until the pressure relief lets go and spills the expanded water out on the floor/crawl space etc. Also some of the better pressure reducing valves have parts to rebuild on their website. Our churches pressure reducer was $300+ but the kit was like $25 and took something like 20 minutes to install. Churches incoming water pressure averages 210 lbs and has to be reduced even for the toilets to flush. We keep pressure at around 50 with 2" pressure reducer valve. This one was slowly leaking that would when building was empty would in the space of a couple of hours creep up from the 50 to 210 lbs and trip the hot water tanks pressure release and then start the cycle again.

 

[barks]

Call the new supplier and ask what they think they're doing with that higher pressure.

 

[kd3pc]

+1 on barks....municipal stuff generally tops out at 80 PSI, max. A lot of box store faucets and such are not rated that high, either.

100 - reason for this??? Unless they are testing the existing pipe plan....

 

[MDSPHOTO]

Most of us were caught off guard as the announcement came in last monthly bill. Many with older homes were running out yesterday to get a prv. This is a private water supplier, from wells, who bought our small well water provider and is linking up our entire development to their well system. Huge community so my guess is they are testing pressures along the system. To previous posters point my shower head sprang a leak at the seam from the pressure. It has backed down to 80 today, but still need further release. One neighbor put his at the street, not sure if this would help to add one there?

 

[RVDan]

Putting your pressure reducer as close the source as you can is best, it takes the pressure off everything downstream so putting it at the street will increase the longevity of everything on your side of it.

 

[btdobie]

At the same time though, it will probably need maintenance at some point. For that purpose it would be beneficial to have it in your house.

It's a catch 22

 

[Milton Shaw]

One other thing to mention is if you put it in your house, put you an outside faucet on the high pressure side. It makes a big difference washing down driveway/car/watering.