China Flange Safety Adjustable Pressure Reducing Relief Control Valve for Water Treatment, Find details about China Pressure Relief Valve, Pressure Reducing Valve from Flange Safety Adjustable Pressure Reducing Relief Control Valve for Water Treatment
Pressure Relief Valve is a hydraulically operated by pilot-controlled to maintain constant upstream pressure.
The valve is actuated by line pressure through a pilot control system, opening fast to maintain steady line pressure and closing gradually to prevent surges. Valve operates automatically and pressure setting can easily change.
A pressure Relief Valve is a safety device designed to protect a pressurized vessel or system during an overpressure event.
In operation, the pressure relief valve remains normally closed until pressures upstream reaches the desired set pressure. The valve will crack open when the set pressure is reached, and continue to open further, allowing more flow as over pressure increases. When upstream pressure falls a few psi below the set pressure, the valve will close again.
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