The pressure relief valve on my water heater keeps dripping. What is wrong?
The rubber seal in the pressure relief valve may have failed with age. Replacement part #WH3. The pressure relief valves used in Raritan water heaters are set for 75 PSI or 210° F. If water temperature or pressure inside the tank exceeds these limits, the valve will unseat. If engine coolant is being used in a Raritan water heater with heat exchanger, some of the engine coolant may have to be diverted via a bypass valve, to insure that the water in the tank does not exceed the limits of the pressure relief valve. Review the owner’s manual or contact Raritan Technical Support.