Safety Relief Valves

We offer a full range of safety relief valves in a variety of sizes, pressure ratings and materials.

The safety relief valve and pressure reducing valve are types of valve used to control or limit the pressure in a system which can build up and cause equipment failure, or fire. On a safety relief valve, the pressure is relieved by allowing the pressurised fluid to flow from an auxiliary passage out of the system.

The relief valve is designed or set to open at a predetermined pressure to protect pressure vessels and other equipment from being subjected to pressures that exceed their design limits. When the pressure setting is exceeded, the relief valve becomes the “path of least resistance” as the valve is forced open and a portion of the fluid is diverted through the auxiliary route.

The diverted gas or liquid is usually routed through a piping system or released into the atmosphere. As the flow is diverted, the pressure inside the vessel will drop. Once it reaches the valve’s re-seating pressure, the valve will re-close.

Pressure reducing valves regulate the outgoing pressure at a constant preset level, even if the inlet pressure varies.

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