Reliable Automatic Sprinkler Co., Inc., 103 Fairview Park Drive, Elmsford, New York 10523
Model DDX Double Interlock
Preaction System – Type D
2” (50 mm), 2½” (65 mm), 3” (80 mm),
76 mm, 4” (100 mm), 6” (150 mm), 165
mm & 8” (200 mm)
Bulletin 750 October 2022
Bulletin 750 October 2022
Technical Specications and
Instructions for Installation,
Operation, and Maintenance
• Available with 175 psi (12.1 bar) or 300 psi
(20.7 bar) Rated Solenoid Valve
• Externally Resettable Clapper
• One Main Drain
• 7 to 10 psi (0.5 to 0.7 bar) Pneumatic
Supervising Pressure
• Electric/Electric Actuation
Image subject to change.
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