Electric ON/OFF Deluge Valve VD/OF/E

Electric ON/OFF Deluge Valve VD/OF/E supplied by SA Fire Protection

The valve Mod. VD/OF/E is a deluge valve ON/OFF with electric actuation and remote reset, available in diameter sizes from 2” (DN 50) to 10” (DN 250).

The deluge valves ON/OFF Mod. VD/OF/E are used to control water or foam/water flow in water spray or foam fire protection systems monitored by electric fire detection system. When equipped with the relevant accessories (pressure switch, water motor alarm), they can provide actuation of fire alarms upon system operation.

In normal operating conditions the deluge valve ON/OFF electric VD/OF/E is held closed by the water pressure in the control chamber. In fire conditions water is released from the control chamber through the opening of the solenoid valve in the control trim, and the valve latches open under the effect of the water supply pressure. The valve can be manually open through the emergency manual release on the control trim. The trim is also provided with the connection for an optional remote manual control. The valve can be remotely reset closing the solenoid valve.

The deluge valve ON/OFF electric Mod. VD/OF/E is available in vertical or horizontal configuration. The cover plate allows in-line maintenance and field replace of the diaphragm to be performed.

The materials of construction make it suitable for being used with sea water or water foam solution within industrial harsh environments & offshore applications.

Principle of operation

In normal operating conditions (valve closed) the water is supplied to the priming chamber through the trim. The pressure of the water trapped in the priming chamber holds the diaphragm on the valve seat, keeping the valve closed.

The control trim is held closed by the solenoid valve and the manual emergency release.

In fire conditions (valve open) the opening of the solenoid valve via remote signal releasing the pressure from the control chamber. The water supply pressure in the inlet chamber forces the diaphragm off from seat, allowing water to flow into the system and the alarm devices.

Alternatively, the deluge valve can be opened locally through the emergency manual release.

A restriction orifice in the control trim reduces the water inlet compared to the internal passage of the solenoid valve, allowing the opening of the priming chamber.

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