Pressure relief valves (PRVs) are a critical line of defense ... To ensure the PRV will function when called into action, the American Society of Mechanical Engineers (ASME) mandates relief ...

The RPEN provides two main functions: it acts as the relief valve to protect the system from overpressure if the fan motor stalls, and it modulates the pressure proportional to a given command to ...

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 ...