National Stock Number:
4210-58-000-1310
Federal Supply Class:
4210
National Item Identification Number:
580001310
Description:
VALVE,CONTROL,AUTOM
Detail:
A DEVICE DESIGNED FOR INSTALLATION IN THE MAIN RISER OF A DRY OR EMPTY PIPE AUTOMATIC SPRINKLER SYSTEM AND HELD CLOSED BY SPRING FORCE, AIR, OR WATER PRESSURE. WATER IS AUTOMATICALLY RELEASED TO THE SPRINKLER SYSTEM EITHER BY RELEASING OR LOWERING THE PRESSURE BEYOND THE MINIMUM REQUIREMENT OR ADMITTING AND INCREASING THE PRESSURE TO OVERCOME THE SPRING FORCE.
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