Nov 28, 2017 · A Pressure Relief Valve is defined by NFPA 20 (3.3.67.5 Relief Valve) as “A device that allows the diversion of liquid to limit excess pressure in a system.” In general, a PRV is a safety device, designed to protect a pressurized system during an overpressured event.

The 50 Series Pressure Relief Valve is designed to maintain constant upstream pressure within close limits. In operation, the valve is actuated by line pressure through a pilot control system, opening fast to maintain steady line pressure but closing gradually to prevent surges.

May 14, 2020 · For diesel engine fire pump: Where a total of 121% of the net rated shutoff (churn) pressure plus the maximum static suction pressure, adjusted for elevation, exceeds the pressure for which the system components are rated.

Pressure Relief valves are safety devices that are designed to quickly relieve overpressure in a fire protection system. Pressure relief valves are designed to open at a preset pressure threshold to drain the excess water pressure to the atmosphere or to a sump.

May 28, 2024 · These devices, such as pressure-reducing valves and pressure-relief valves, are crucial for maintaining safe pressure levels within automatic sprinkler and standpipe systems, as dictated by standards like NFPA 13 and NFPA 14, especially considering the varying flow conditions and system demands.

The Cla-Val Model 2050B-4KG1 Globe/ 2050B-4KG1 Fire Pump Angle Pressure Relief Valve is designed to automatically relieve excess pressure in fire protection pumping systems. Pilot controlled, it maintains constant system pressure at the pump discharge within very close limits as demands change.

The ZW205FP Pressure Relief Valve relieves high system pressure in Fire Suppression Systems. Its pilot assembly reacts quickly to increases in upstream pressure, preventing damage to system piping, valves, and sprinklers while maintaining positive pressure on fire pumps.

BERMAD's globally proven Fire Protection solutions provide the greatest reliability and durability in deluge valves and other water control systems.

HD Fire Protect's pressure relief valves are designed to protect your fire sprinkler system from excess pressure caused by surges or temperature changes. Our valves are UL Listed and FM Approved, and meet all NFPA-13 requirements.

Protecting people and property from the ravages of fire. Our pressure relief valve automatically relieves excess pressure so the fire protection system doesn’t overpressure in response to surges and/or pumps turning on or off.