DOUBLE INTERLOCK, PREACTION SYSTEM

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JUNE, 2019HD 128PAGE 1 OF 6HD FIRE PROTECTPVT. LTD. DOUBLE interlock , PREACTION SYSTEM WITH ELECTRIC/PNEUMATIC RELEASESIZE 50, 80, 100, 150 & 200 NBDELUGE VALVE Model H3, UL ListedCHECK VALVE Model-CH SPRINKLER ALARM UL Listed (Optional)RELEASE PANEL UL Listed (Optional)WATER FLOW UL Listed SWITCHSOLENOID VALVE 24V DC, UL ListedAUTOMATIC AIR Oil-less Risermount SUPERVISOR Compressor (Optional)AIR PRESSURE PMD-1 (Optional) MAINTENANCE DEVICE MANUAL SYSTEM UL Listed, Butterfly Valve - SHUTOFF VALVE Standard supply. (Gate Valve - Optional)MAXIMUM WORKING (250 PSI)PRESSURESYSTEM END Grooved (Standard supply) CONNECTION Flanged (Optional supply)APPROVAL UL ListedTECHNICAL DATADESCRIPTIONThe DOUBLE interlock PREACTION SYSTEM with Electric/Pneumatic Release is generally used to protect water sensitive areas such as computer rooms, storage areas, refrigerated areas etc.

Double Interlock Pre-Action System to automatical-ly actuate, two independent events must occur. The Deluge Valve Releasing Panel must operate and open the Solenoid Valve upon automatic operation of the electric fire detection initiating circuit and the sprin-kler system piping must lose air pressure due to op-eration of one or more sprinklers.

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