All pressurized non storage type water heaters shall be provided with a pressure relief valve installed at the hot water outlet with no shut off valve between the heater and the relief valve.
Hot water heater pressure relief valve extension pipe.
Primarily used on storage tanks p1000axl materials include cast brass or bronze for the main valve body quality stainless steel 300 series internals stainless steel springs and fda approved epoxy coated copper tube probes.
Temperature and pressure relief valves shall be installed so that the sensing element of the valve extends into the heater tank and monitors the temperature in the top 6 inches of the heater or tank.
If the water heater thermostat fails to turn off at its temperature setting and continues to heat the water indefinitely the tpr valve will open and let the overheated water out.
The p1000axl 150c pressure relief valve is set at the p1000axl 150c pressure relief valve is set at 150 psi and utilized on water heating storage vessels for protection against over temperature or excessive pressure not for steam service.
Relief valve 7 restraint 13 stand 18 supply line filter 8 supply line softener 4.
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The pressure relief valve extension is plastic and has a couple of elbows leading it to a drain.