Re: hot water heater press/temp relief valves

Posted by Dale's Plumbing Service LMP on January 20, 19100 at 22:20:22:
In response to Re: hot water heater press/temp relief valves
: my pressure relief valve (prv) started dripping at a gradually increasing rate - water temperature seems normal (125f) and supply pressure seems unchanged (80psi) - i shut off supply, opened hot water faucet to relieve pressure, and replaced prv with new one. it started dripping in a few days. i had opened it a bit to let most air out while filling after installation. it also started dripping in a few days -i replaced it with 2nd new one- week or so later it pulsed water out vent line after strong water hammer from high flow tub faucet - it now drips at random w/o thermal or press bumps - any ideas? Tom, You should have an expansion tank on this water heater. It may be defective. knock on it and if it has a thud sound it is bad. let a bit of air out and if water comes out instead of air it is bad.Replace as needed. If you don't have an expansion tank get one. Dale's Plumbing Service LMP

Posted by Dale's Plumbing Service LMP on January 20, 19100 at 22:20:22:

In response to Re: hot water heater press/temp relief valves

: my pressure relief valve (prv) started dripping at a gradually increasing rate - water temperature seems normal (125f) and supply pressure seems unchanged (80psi) - i shut off supply, opened hot water faucet to relieve pressure, and replaced prv with new one. it started dripping in a few days. i had opened it a bit to let most air out while filling after installation. it also started dripping in a few days -i replaced it with 2nd new one- week or so later it pulsed water out vent line after strong water hammer from high flow tub faucet - it now drips at random w/o thermal or press bumps - any ideas?

Tom, You should have an expansion tank on this water heater. It may be defective. knock on it and if it has a thud sound it is bad. let a bit of air out and if water comes out instead of air it is bad.Replace as needed. If you don't have an expansion tank get one. Dale's Plumbing Service LMP

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