Lewe
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my tpr valve only leaks a small amount of water when the hot water heater is heating up . i have replced the tpr valve and it still leaks. i have checked the water pressure at an ouside faucet and the pressure is between 70- 80 psi unless the water heater is heating and then it has gone as high as 150 . i do not have a expansion tank and have been told my numerous plumbers that they dont use them . the water heater is only 3 years old . i have been told maybe i need a pressure reducing valve installed at the water meter . please help.