NJHomeowner
New Member
Hello.
I live in NJ and just had a new Rheem 40 Gallon Gas WH installed. My plumber then tested the pipe pressure, I have 1/2 in pipes in the house, and it was a bit on the high side. It was just under 80psi in normal circumstances (sometimes got down to 72psi on cold nights) and would go as high as 98psi when the water was heated. So my plumber installed a Pressure Reducing Valve and gauge where my water meter is and a Therm-x-Trol ST-5 expansion tank on the WH cold water line right above the tank. I set my house pressure to 62psi and my plumber adjusted the expansion tank to be around 62psi as well.
Now I have noticed that when the WH kicks on the gauge will go up as high as 71psi but eventually come back to rest at 62psi. Is that normal? I thought the expansion tank was there to keep the system at 62psi at all times, even when the water gets heated. Is there a problem with the expansion tank or perhaps something else in the system? I just want to make sure everything is operating properly.
Thank you.
I live in NJ and just had a new Rheem 40 Gallon Gas WH installed. My plumber then tested the pipe pressure, I have 1/2 in pipes in the house, and it was a bit on the high side. It was just under 80psi in normal circumstances (sometimes got down to 72psi on cold nights) and would go as high as 98psi when the water was heated. So my plumber installed a Pressure Reducing Valve and gauge where my water meter is and a Therm-x-Trol ST-5 expansion tank on the WH cold water line right above the tank. I set my house pressure to 62psi and my plumber adjusted the expansion tank to be around 62psi as well.
Now I have noticed that when the WH kicks on the gauge will go up as high as 71psi but eventually come back to rest at 62psi. Is that normal? I thought the expansion tank was there to keep the system at 62psi at all times, even when the water gets heated. Is there a problem with the expansion tank or perhaps something else in the system? I just want to make sure everything is operating properly.
Thank you.