Pressure Relief Valve

Definition - What does Pressure Relief Valve mean?

A Pressure Relief Valve is a valve that controls the pressure in a system so as to avoid certain mishappenings like equipment failure. It is designed in such a way that it allows the pressurized fluids to pass through the auxiliary passage of the system. The main principle when designing such valves is to protect the vessels and other equipment that are subjected to pressures exceeding their pressure limits.

Petropedia explains Pressure Relief Valve

Pressure Relief Valves are used in petroleum refining, chemical manufacturing, and power generation industries. They mainly work during an overpressure event for the protection of life and property in the over pressurized vessel. When the pressure in a vessel exceeds the limit, the pressure relief valves divert fluids in the vessel and the pressure inside the vessel stops rising. There are various types of pressure relief valves such as spring-loaded relief valve, balanced piston valves, and balanced bellow valves. The design of the pressure relief valve is simple thus it offers utmost reliability.

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