Double-Interlock Pre-Action, Manual Reset, Electro-Pneumatic Release System

Electrically and pneumatically, pilot controlled, double-interlock, pre-action valve, actuated by the pipeline pressure. The valve is closed inits normal, set position and opens when the pressure drops in a gas pressurized supervisory pilot line, sensed by the relay valve, and the solenoid valve is energized. The valve must be manually reset following automatic actuation. An emergency manual release valve is fitted as standard.



  • High pressure (PN25/375psi), high flow systems
  • Automatic or manual emergency actuation
  • Industrial & commercial fire suppression
  • 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 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