The G series Free Fall Fire Valves have been specifically designed for use on gas distribution systems, they are an essential part of fire protection systems. These valves are used for isolation of the fuel supply.
Activated by the melting of a fusible link or by ancillary items such as manual quick release, panic buttons, Solenoid Quick Release (electrical) intervention with main fire alarm / BMS communication. Positional feedback can be achieved by incorporating a non-mercury tilt position switch.
The valve is held open by an anchored stainless-steel cable routed around a pulley system, the fusible link is positioned within the cable near to the potential heat source. When the cable is released, by melting of the fusible link, manual or electrical intervention the tension is released from the system allowing the free-fall linkage and weight to freely fall before it is required to move the valve lever, this provides sufficient momentum for reliable operation and allows the valve to close.
Tilt Position Switch
Low Level Installation Kit
Material: Cast Iron, painted
Maximum Pressure: 14 Bar (200psi)
Standard Cable: 9m
Fusible Link: 71°C as standard
Valve Rotation: 90° (¼ turn)
Flange Specification: BS4504, PN16