I have purchased a REPLACEMENT bladder tank for my residential well, and the instruction sheet says I should install a pressure relief valve. The EXISTING system does not have a separate one, except for the T & P valve on the water heater.
Insofar as the water heater shares the same pressures in the system, is this one valve all that is required?
The new tank is rated for a 125 psi working pressure maximum, and I intend to use the system with a 40 - 60 psi pressure switch.
The T & P relief on the water heater has a tag showing 150 psi.
Your help will be appreciated.
2007-07-20 09:50:30 · 8 answers · asked by Saturn 5 4 in Home & Garden ➔ Maintenance & Repairs
T and P stands for Temperature and pressure.
Pressure relief is covered unless your area has some odd requirements but this is primarily protection for your water heater and that circuit.
My well in Houston had an air bleeder valve on the tank but my pump would never have gotten up to those pressures and yours probably wont either.
The law requires that all pressure tanks be rated but relief valves are seldom a requirement on well pump systems.
Good Luck!
2007-07-20 10:11:52 · answer #1 · answered by mthourot1 2 · 2⤊ 1⤋
if you are only replacing the tank the connection which looks like a t should have a pressure relief on it it looks like a screw.the part if pipe where the water hose goes to. head,that is separate from your water heater relief valve.
2007-07-20 19:36:27 · answer #2 · answered by luka 5 · 0⤊ 0⤋
You should have a relief valve set at 125psi on the new tank.That tank and any pressurized tank should have a pressure relief valve on them to prevent explosion. It is a safety issue. Water heaters are rated at 150psi working pressure that is why you have a 150psi relief valve on it.They are not that expensive. Install the PRV
2007-07-20 21:39:20 · answer #3 · answered by G m 2 · 0⤊ 1⤋
USA It never hurts to install an extra TPR valve. You need to have a TPR valve at the water heater. If there are no valves between the bladder tank and the water heater, you do not need to install a separate TPR valve for the bladder tank.
2007-07-20 22:33:06 · answer #4 · answered by Dave 5 · 0⤊ 1⤋
You have just read a Disclaimer from the company that made the tank. This protects them in case you decide to go above pressures stated for the tank. I have never had a seperate valve on any of my tanks.
2007-07-20 17:22:59 · answer #5 · answered by sensible_man 7 · 2⤊ 1⤋
i cant recall seeing a relief valve on any of my water tanks. not a plumber with a license, but i doubt very much if a water pump would pump 125 lbs pressure. but could not guarantee it. never saw it happen. the hot water tank has a relief valve because the tank could malfunction and overheat, creating high pressures. never saw a water tank overheat. but if you want to feel better sbout it, they do not cost much. peace of mind.
2007-07-27 13:36:30 · answer #6 · answered by oldtimer 5 · 0⤊ 1⤋
A Pressure Relief valve (PRV) is designed to protect pressure vessels from pressures in excess of their rating. If your tank is rated at 125 psig, then a 150 psig relief valve will not actuate in time to protect it. In addition there should be no valve in the line between the vessel to be protected and the relief valve. Otherwise you could isolate the tank from the PRV and in effect nullify its utility.
Do Not rely on a pressure switch to protect your tank.
2007-07-20 17:21:15 · answer #7 · answered by pearl_drummer_37664 2 · 1⤊ 2⤋
i would use the one valve on your hot water tank ,but building commishiner might feel different
2007-07-26 22:21:39 · answer #8 · answered by Anonymous · 0⤊ 1⤋