gplumb
Member
I just had a plumber install a hot water recirculation system with a dedicated return line to the water heater cold inlet and a pump at the water heater. The system woks great and I now get instant hot water at the most distant sink. A backflow valve was put into the cold feed to prevent hot water going back into the cold line from the return line (some say this isn't needed). A 2 gal. thermal expansion tank and a pressure gauge were added. The water heater has a 50 gal. capacity. Now the pressure gauge reads 68 psi after it settles down after opening a faucet. Then over time a few hours with no water use it creeps up to 92. Do you think the expansion tank is working or is it the Wilkins BR4 Pressure Reducing Valve? Since I never had a pressure gauge in the system (other than using a hose bib type occasionally), I may not have known this was happening. How can I isolate the cause of this.
Thanks for any advice.
Thanks for any advice.