This valve helps prevent your water heater’s tank from exploding, and it will open if the temperature inside the tank exceeds 210 degrees or if the pressure inside the tank exceeds 150 psi.

If a pressure relief valve for a boiler is accidentally installed on a water heater, it will leak like crazy from the start. These valves may look identical, but they're set to go off at 30 psi ...

Once the temperature and pressure relief valve at the water heater leaks, go check the pressure gauge. If the 'surge indicator' shows something at or near 150 psi, the problem is excessive pressure.

The wide open capacity of pressure control valves can be obtained with the valve manufacturer's assistance or can be calculated from data in the form of maximum flow coefficients for the valve (s) ...

Of course, this was at a time when just about everyone was burning coal and low-water cutoffs hadn’t been invented. High-pressure steam boilers were blowing up all across the land and a big reason for ...