GW - Model C300 -Fluid Control Valve Non Regulating with Integral Actuator

This is a hydraulically operated elastomeric sleeve valve. It is typically fitted into a fire water main – or section branch pipe, where a controlled opening and closing is required. Installation can be either horizontally or vertically.

The GW C-300 deluge valve is “self-powered” – and utilizes the system upstream (inlet) pressure to hydraulically close and open. It is activated pneumatically via the integral actuator, to trip upon pilot line air pressure drop.

The linear “straight thru” valve design with the aqua dynamically shaped fingers provides a remarkable low pressure drop across the valve in the fully open position.

This elastomeric sleeve type valve is normally closed, and is maintained in the closed position by diverting upstream water directly to the flow control sleeve cavity. This is accomplished by the integral pneumatic actuator, mounted on the deluge valve, in the pressurized (air on) position.

Upon instruction (air off) the actuator switches to open position and water is allowed to drain from within the sleeve cavity, thus releasing the hydraulic pressure that seals the sleeve against the seat. The deluge valve opens in a controlled way as upstream pressure lifts the sleeve off the seat and water starts flowing through the valve gradually expanding the elastomeric flow control sleeve.

The opening (and closing) speed is adjustable via restrictors controlling the in and out flow to the sleeve cavity, thus preventing water hammer and damage to downstream pipework and components.

The valve is maintained in the open position as long as air pressure supply to the integral actuator is below 0,5 bar. The valve can be (remotely) reset (closed) by supplying 1,5 – 12 bar air pressure on the pneumatic actuator. This will switch the actuator to closing position, thus pressurizing the sleeve cavity and contracting the elastomeric sleeve against the core seat in the center of the valve casing.