parkp81
New Member
I just got finished installing a expansion tank for my water heater.
Before I did all this I took a Watts water pressure gauge and connected it to a hose spigot, and the reading was at 65 (There is a pressure reducing valve installed). I then pumped the expansion tank to 65 psi, before installing. I decided it was a good time to drain the water from the water heater also, so I did that. I installed the expansion tank and turned everything back on.
A few hours later I went outside to check the water pressure (I left the pressure gauge connected, with the spigot turned on) to see if it was holding at 65, and I noticed the red needle shows the highest the pressure got to was around 52/53.
I assume I have too little pressure in the expansion tank? If so, it must mean the gauge I used is not accurate.
Before I did all this I took a Watts water pressure gauge and connected it to a hose spigot, and the reading was at 65 (There is a pressure reducing valve installed). I then pumped the expansion tank to 65 psi, before installing. I decided it was a good time to drain the water from the water heater also, so I did that. I installed the expansion tank and turned everything back on.
A few hours later I went outside to check the water pressure (I left the pressure gauge connected, with the spigot turned on) to see if it was holding at 65, and I noticed the red needle shows the highest the pressure got to was around 52/53.
I assume I have too little pressure in the expansion tank? If so, it must mean the gauge I used is not accurate.
Last edited: