Water heater pressure release valve
2002 Montana. How easy/difficult is it to replace a pressure release valve on the water heater? Mine has a slow drip that probably will just get worse as time goes on. THANKS
Forum Discussion
rhagfo wrote:
Pressure relief valve should not drip, the air space has nothing to do with it.
The 'air space' has a lot to do with it
Water can not be compressed......air can
Water expands when heated and as it expands it needs an air pocket that will compress otherwise pressure will increase . When pressure increases due to expansion of that heated water the PRV will weep.
Both Suburban and Atwood explain this.
Both mfg. design an air pocket into WH tanks using dip tubes
And as a commercial boiler operator I can testify to the expansion & subsequent pressure increase when heating water.
