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Old 10-14-2017, 06:01 PM   #1
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Are water pressure regulators required?


I just had my water trunk line replaced do to a leak in the old trunk line. I had a plumber do the install as the excavation company recommended it. I will post a picture of the install to let you guys take a look.

Before the install the pressure was great. Now it is not very good. During the install the plumber added a pressure regulator. I tried to open up the pressure in the regulator but the pressure still sucks. I am afraid if I back the bolt out too far, I will end up with the bolt falling out and cold water spraying all over me.

Is a pressure regulator often required by local code? How can I get my water pressure back?
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Old 10-14-2017, 06:19 PM   #2
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Re: Are water pressure regulators required?


After releasing the jamb nut, turn the nut CLOCKWISE to increase pressure. I believe you were turning in the opposite direction.
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Old 10-14-2017, 06:21 PM   #3
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Re: Are water pressure regulators required?


The bolt go's in. Also try to not exceed 80 LBS pressure. 60 lbs is what most modern fixtures are designed for.
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Old 10-14-2017, 06:34 PM   #4
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Re: Are water pressure regulators required?


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The bolt go's in. Also try to not exceed 80 LBS pressure. 60 lbs is what most modern fixtures are designed for.
Don't know we got greater than 60 before. I have a pressure tester somewhere. I will just turn up the pressure to close to where it was before then bring it up to 60 when I have a pressure gauge.
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Old 10-14-2017, 06:38 PM   #5
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Re: Are water pressure regulators required?


If your incoming pressure without the PR valve was less then 80 PSI you did not need one. Now that you have one make real sure your hot water tank has some form of expansion control device. Most use an expansion tank.

If your under 80 psi with out the valve remove it.
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Old 10-14-2017, 06:56 PM   #6
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Re: Are water pressure regulators required?


If you're on municipal water, keep it. I have heard horror stories of fluctuations in pressure from city/county supplies that exceed 120 psi. It only takes once.
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Old 10-14-2017, 07:42 PM   #7
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Re: Are water pressure regulators required?


I am not sure what it was before, but the showers were great. I went into the crawl space and read the fine print on the valve. It's range is between 10-70 psi. I cranked it down and the pressure seem alright in the kitchen but the shower is possibly less.

I guess i need to come to terms with only 70 psi showers.
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Old 10-14-2017, 10:34 PM   #8
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Re: Are water pressure regulators required?


If your Pressure temperature relief on the hot water tank starts leaking you will need that expansion control device for the hot water tank.
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Old 10-14-2017, 11:51 PM   #9
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Re: Are water pressure regulators required?


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If your Pressure temperature relief on the hot water tank starts leaking you will need that expansion control device for the hot water tank.
I have no expansion tank at the moment.

I am in the middle of making a decision on what my next hot water heater will be. I have electric now but the heater was a cheap one and is 15 years old.

There is a half inch gas line installed in the water heater location, so am considering gas. I am considering tankless, power vent and normally vented. Either way i will need to figure out how to vent the gas, and add an expansion tank.
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Old 10-15-2017, 06:07 AM   #10
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Re: Are water pressure regulators required?


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If you're on municipal water, keep it. I have heard horror stories of fluctuations in pressure from city/county supplies that exceed 120 psi. It only takes once.
My house is a LOT higher than the water meter/supply. I don't have a pressure reducer valve. My pressure averages 25-35 psi. I have left the gauge on overnight and recorded pressures of 50-60 psi. There can be times where the pressure will dramatically increase!

I also don't have an expansion tank with my water heater, not sure that one is needed - but each situation can be different!
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Old 10-15-2017, 06:19 AM   #11
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Re: Are water pressure regulators required?


Marksr, you are on a mountain, so that is possibly why your ambient pressure is so low. Usage below you is keeping it down. At night that pressure will rise. One of my clients tied into municipal water without a prv and when they energized it, the pressure was over 120 psi and blew out everything at the entrance, including his water heater connections. I don't think it was due to the high pressure alone, but to the horrible surge. He lives on a mountain, too, and they were activating a mid span pump system.
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Old 10-15-2017, 06:25 AM   #12
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Re: Are water pressure regulators required?


It would have helped to add a gauge next to the valve. BTW, and this is a dumb question, did you flush out the plumb fixtures? Valve itself has a screen. Valve is also a one way check, and that means you need expansion tank at the water heater and boiler (if supply valve is open all the time).
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Old 10-15-2017, 05:01 PM   #13
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Re: Are water pressure regulators required?


The house was built 20 years ago without any expansion tank. Why now that I have a pressure regulator, should i have a pressure tank?

I took the first shower this morning. The water pressure upstairs was awful. The sinks downstairs feel like they pressure is less but the shower is almost unuseable.
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Old 10-15-2017, 05:51 PM   #14
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Re: Are water pressure regulators required?


Final pressure is set by increasing spring tension plus set the pressure using a gauge as mentioned and another valve open so there is flow while adjusting. If that fails to correct the problem debris is a possible culprit. If all that fails then as we suspect all pressure regulators aren't created equal.
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Old 10-15-2017, 08:52 PM   #15
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Re: Are water pressure regulators required?


There's no reason to have water savers if the pressure keeps getting turned up.
Why take a chance with too high of water pressure.?

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