OldmanRick
Well-Known Member
Just realized the PRV (temp/pressure relief valve) doesn't even have a down tube Rani. That can't be correct either? Even without going outside, most codes require it goes down to within 6" of the floor.
What is the tank for?
Just realized the PRV (temp/pressure relief valve) doesn't even have a down tube Rani. That can't be correct either? Even without going outside, most codes require it goes down to within 6" of the floor.
Electric, professionally done by........me.
Who installed this to start with? The TPR valve doesn't even have a drain tube on it. This is a diaster waiting to happen.
i really dont know who installed it ...it was installed over thanksgiving 2008 and i wasnt here .......it may have been either my uncle or sears themselves ...not sure ......i actually just live here and try to take care of the house in exchange for rent free living....but my uncle is the actual owner of the house.
i didnt want to bother my uncle with the problem ...thats why i called sears and tried to handle it myself big girl style ...so he didnt have to worry about it......but that didnt work out very smooth
Nice job.
One question? Why do you use a gate valve instead of a quarter turn ball valve?
I've used ball's on almost all i've done before. Only reason i didn't here was i lived in Va. when we bought the house and just did the install on a weekend not knowing if the code here would allow it. The original was a gate, so i just went with it, you know how the code crap goes...lol. Was lucky enough to find out they required the expansion tank that wasn't originallly here, and i was unaware it was needed, by code, when the heater was replaced.
I would cut a new hole for that dryer vent and run it straight out. unless you like dryer fires
Lol, yeah.
Is the expansion tank another saftey device or a water hammer prevention device?
Rani, You need to install a tube like is shown in this photo. If you are walking around that water heater and the TPR valve was to pop you could easily get seriously burned. This one is shown with a bucket under it.
Bill, the tank that's here is because of backflow prevention. With the cold water coming in and the heating process, as you know, expands the volume. In the old days, that pressure was able to push back against the whole city service which was no problem. Now they have replaced the meters with check valves to prevent backflow and contamination to the service. So now, instead of pushing back against the city, it can only push to the meter at the house. The expansion tank takes the pushback when needed and prevents the PRV from seeping water all the time. I thought it was crap at first, but until i installed it, the valve went off all the time.
yes sir, i will get it handled ...thanks for telling me about that .....i am an average person when it comes to water heaters ...i had no idea that it is set-up wrong.......i didnt even know what that valve is for....i messed with that valve before long time ago, having no idea what its for and water came out so i left it alone after that.
Ok, I learned something new today. Thank You. As of right now we don't use expansion tanks but my water system does have a Reduced Pressure Zone valve with an air gap to prevent any back flow on the city.