Water Heaters - relief valve problem
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rodten
11-07-06, 07:11 AM
i have a 40 gallon electric water, the relief valve dripps pretty good every 20 minutes or so, i replaced the valve, it still dripps, i thought well maybe a bad thermastat, i replaced the upper and lower thermastats, still the same dripping problem?????????
should i flush the waterheater to see if that would help and if so what is the proper way to flush a electric water heater??
if that is not the problem, what should i do? Thanks
should i flush the waterheater to see if that would help and if so what is the proper way to flush a electric water heater??
if that is not the problem, what should i do? Thanks
jim-connor
11-07-06, 07:19 AM
A dripping T&P can be caused by:
1.) Tank getting too hot.
2.) Pressure too high.
3.) Bad T&P.
Since you got numbers 1 and 3 covered, that leaves #2. It appears you have a closed system and the expansion from heating the water causes the pressure to build up. Solution, install expansion tank.
Take a pressure reading and see what you get.
1.) Tank getting too hot.
2.) Pressure too high.
3.) Bad T&P.
Since you got numbers 1 and 3 covered, that leaves #2. It appears you have a closed system and the expansion from heating the water causes the pressure to build up. Solution, install expansion tank.
Take a pressure reading and see what you get.
marksr
11-07-06, 07:20 AM
Have you checked the water pressure? My stepsons water heater was going thru PRVs in short order, I was suprised that the almost new pressure regulator was defective and the how high the water pressure was. I replaced both items over 2 years ago and he's had no more problems.
I've not heard of anyone flushing a water heater [I'm not a plumber] but you can drain off sediment from time to time with the spigot at the bottom of the tank.
I've not heard of anyone flushing a water heater [I'm not a plumber] but you can drain off sediment from time to time with the spigot at the bottom of the tank.
rodten
11-07-06, 07:27 AM
as for as a expansion tank what is involed in doing that and the estimated cost, sorry for the lack of knowledge
Ed Imeduc
11-07-06, 08:34 AM
as for as a expansion tank what is involed in doing that and the estimated cost, sorry for the lack of knowledge
Home Depot and Lowes both have a small 2 gal EX tank just for this. You would just put a T in the cold water line and put the tank on it. Can be near the hot water tank. dont have to be . lot of citys have just up and put check valves in the water lines. So that no water from the home can go back into the main water lines. Sorry dont know the cost of them.
ED ;)
Home Depot and Lowes both have a small 2 gal EX tank just for this. You would just put a T in the cold water line and put the tank on it. Can be near the hot water tank. dont have to be . lot of citys have just up and put check valves in the water lines. So that no water from the home can go back into the main water lines. Sorry dont know the cost of them.
ED ;)