Electrically Actuated Remote Reset Deluge Valve 77 DE RC
Electrically controlled deluge/pre-action valve, actuated by the pipeline pressure. The valve is closed in its normal, set position and opens when a 3w solenoid valve is energized. It closes drip-tight when the solenoid valve is de-energized. An emergency manual release valve is fitted as standard.
FEATURES & BENEFITS
High pressure, high ﬂow deluge systems
Automatic or local manual emergency actuation
Hazardous, flammable & explosion classified area fire suppression
Superior design featuring exceptionally low pressure losses at high flow rates
Low lifelong maintenance costs due to straightforward design
Applicable for fresh or brackish water, seawater & foam
Out of box fully assembled & tested valves
Factory trimmed for vertical & horizontal installations without modification
Extensive valve & trim materials selection and corrosion protection coating
CERTIFICATION & COMPLIANCE
• ANSI FCI 70-2 Class VI seat leakage class
• Lloyd’s Type Approva
Automatic or Manual Actuated Fire Suppression Systems
Petrochemical, Oil & Gas Installations
Power Generation, Transformer & Transmission Plants
Hangars & Airport Terminals
Onshore / Offshore
The basic control valve  used in this deluge system is a direct sealing elastomeric diaphragm, hydraulically operated control valve engineered specifically for fire protection systems. The system includes a 3/2-way N.O. solenoid  as the interface between the fire alarm control panel - monitoring heat, smoke or flames - and the deluge valve.
In the standby position, the deluge valve is held closed by the upstream water pressure, trapped in the valve’s control chamber. The water pressure enters the control chamber through the priming line ball valve , a Y-type strainer , a check valve  and a T-restrictor .
Under fire conditions, a fire alarm control panel energizes the 3/2-way N.O. solenoid (or de-energizes the coil of a continuously energized ED 100% normally closed solenoid for SIL 3-4 rated systems). The pressure in the relay valve  drops, causing it to open and allowing the water to drain the deluge valve’s control chamber. The deluge valve opens instantly and allows water to flow the pipeline and through the open sprinklers over the protected area.
Manual emergency actuation is enabled by opening the emergency manual activation valve . The deluge valve opens instantly and allows water to flow the pipeline and through the open sprinklers over the protected area.