Special Hazards / Special Systems: Double Interlock Preaction Systems
Double Interlock Preaction System -Type D - 1-1/2" (40mm) Data sheet
Double Interlock Preaction System - Type D - 2-1/2" (65mm) Data sheet
Double Interlock Preaction System - Type D - 2", 2-1/2", 3" & 76mm - DDX Valve Data sheet
Double Interlock Preaction System - Type F - 2", 2-1/2", 3" & 76mm - DDX Valve Data sheet
Double Interlock Preaction System - Type D - 4" & 6" (100mm & 150mm) - DDX Valve Data sheet
Double Interlock Preaction System - Type F- 4" & 6" (100mm & 150mm) - DDX Valve Data sheet
Double Interlock Preaction System - Type D - 8" (200mm) - DDX Valve Data sheet
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