It is only necessary if the water pressure is higher than 80 psi. And if a compressor is installed, it is also necessary that there be an expansion tank. Like the PRV, it is a closed system and requires the expansion tank. I see that the Prv is installed in new homes without the expansion tank, this can really cause a lot of problems.
There were no pipes other than the red PEX, and there were no pipes running down the tank on the sides or the back. Anyway, what would happen if there was no ProValve? Anyway, what would happen if there was no ProValve? If the thermostat were out of control, the tank could explode IF there is no TPR. There's simply no other way to release excess pressure under the right conditions. Did you happen to move that black box in the middle of the two tubes?I see a lot of relief valves there, in fact, mine is there.
What island community are you in? I wasn't there and I wish we had more photos or a model number. To see where the TPR faucet on this tank is. And when a PRV fails, it can cause an explosion. It can cause damage to equipment, interrupt workflow, and even injury.
Why take that risk when you can easily tell if your pressure relief valve needs to be replaced or repaired or not? If the pressure is 80 psi or more, go to the owner and recommend that they install the valve (which, of course, they will be happy to do). Instead of removing the valve and replacing it or sending it for testing, use in-line testing equipment, such as the AccuTest SL or AccuTest TT, to quickly and efficiently test the pressure relief valve and the safety valves. If your system is above pressure and the pressure relief valves (PRV) haven't come loose, it's likely a functional failure of the pressure relief valve. A water pressure relief valve (PRV) is vital for reducing incoming pressure from the water supply source.
However, there are also times when a plumber goes out to do any type of work, such as a leaking faucet, and decides independently to check the pressure. If properly maintained, a pressure relief valve can remain in service for up to 30 years and, if tested regularly, something else in the system is likely to be at fault. If your facility is having difficulty diagnosing a pressure relief valve fault, online tests can help. Detecting leaks in a pressure valve is a little more complicated to solve, as there are several possible causes.
Contaminants, such as dirt, lint, rust, mud, or even valve misalignment, can cause the pressure relief valve to clog. At this point, you may see that your system is above pressure or you may notice that other pressure relief valves in the system are coming loose to compensate for the malfunction of this valve. It is suitable for low-pressure steam and water service, and is ideal for use in household water heaters and supply tanks, table heaters, jacketed steam kettles, unit heaters, low-pressure steam systems and steam coil heaters. While the other two signs are quite obvious, the latter is more obvious when you directly inspect the pressure relief valves.
Relief valves keep the system at optimal pressure to avoid damaging pressure-sensitive components or machinery. If you notice that the pressure relief valve is leaking, flooding, or hearing strange noises coming from your PRV, it's time to replace it. That said, pressure relief valves can and do fail, and it's important to be able to recognize the signals to quickly resolve the problem and keep your facilities safe.
