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Reliable DDX Instructions For Installation, Operation And Maintenance

Non-interlock preaction systems 2” (50 mm), 2 1/2” (65 mm), 3” (80 mm), 76 mm, 4” (100 mm), 6” (150 mm), 165 mm & 8” (200 mm)
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Technical Specifications and
Instructions for Installation,
Operation, and Maintenance
Reliable Automatic Sprinkler Co., Inc., 103 Fairview Park Drive, Elmsford, New York 10523
Model DDX
Non-Interlock Preaction Systems
2" (50 mm), 2½" (65 mm), 3" (80 mm),
76 mm, 4" (100 mm), 6" (150 mm),
165 mm & 8" (200 mm)
•
Available with 175 psi (12.1bar) or 300 psi
(20.7 bar) Rated Solenoid Valve
•
Pneumatic Actuator Utilizing 12 psi to 28 psi
(0.8 to 1.9 bar) Supervising Pressure
•
Externally Resettable Clapper
•
One Main Drain
Image subject to change.
Bulletin 756 April 2024

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Summary of Contents for Reliable DDX

  • Page 1 Pneumatic Actuator Utilizing 12 psi to 28 psi (0.8 to 1.9 bar) Supervising Pressure Operation, and Maintenance • Externally Resettable Clapper • One Main Drain Image subject to change. Reliable Automatic Sprinkler Co., Inc., 103 Fairview Park Drive, Elmsford, New York 10523...

  • Page 2: System Operation

    At the heart of the Reliable Non-Interlock Preaction Sys- Resetting the clapper of the Model DDX Deluge Valve is tem is the Model DDX Deluge Valve. This deluge valve is accomplished using the convenient external reset knob on a hydraulically operated, straight-through-design, differen- the rear of the valve.
  • Page 3 INLET WEEP HOLE TEST PORT EXTERNAL RESET HINGE DRAIN PORT INLET MODEL DDX VALVE: SECTION VIEW 1C_COMMDDX_1 PUSH ROD CHAMBER EXTERNAL RESET KNOB MODEL DDX VALVE: REAR VIEW TO RESET: PUSH INWARD AND ROTATE KNOB CLOCKWISE (AS VIEWED FROM REAR) TO RESET CLAPPER.

  • Page 4: System Design Considerations

    IMPORTANT: The unique ability of the non-interlock sys- tem to operate as both a single-interlock preaction system and a dry pipe system requires that the Model DDX be sup- plied with NO LESS THAN 50 psi (3.5 bar) of water pres- sure, and supervisory air pressure in strict accordance with Table A.

  • Page 5: System Electrical Requirements

    Voltage: 24 VDC Pilot Actuator in the closed position for a given water supply Power: 10 Watts pressure, while ensuring that the Model DDX non-interlock Current: 0.41 Amps Holding system will operate properly in single-interlock preaction Enclosure Coil: NEMA 4X mode.
  • Page 6 8” (200 mm) Black or Red Model DDX Deluge Valve Description 5. Face to face dimensions: 1. Rated working pressure: Valve Size: End to End: Connection: Valve & System - 250 psi (17.2 bar) for 2” (50mm), 2 ” 2" (50mm), 2½" (65mm), (65mm), 76mm, 3”...

  • Page 7: Maintenance

    The Non-Interlock Preaction Trim for the Reliable Model If the detection/release panel was reset, activate the DDX Deluge Valve is arranged for rapid, easy, and compact detection system to energize the solenoid valve open. attachment, and serve as connection points to Reliable 8.
  • Page 8 5. Reset detection system — reverse operations per- formed in step three above and then proceed accord- ing to the directions listed in the “Resetting Model DDX Deluge Valve Non-Interlock Preaction Systems” section of this bulletin for resetting the Deluge Valve.
  • Page 9 15 foot-pounds in a mounting ring subassembly. Start to tread the seat into star pattern. Set up the Model DDX Deluge Valve as per the the body by hand, then tighten the seat with the seat section “Resetting Model DDX Deluge Valve Non-Interlock...
  • Page 12 Bolt 7. Reinstall the actuator and set up the system following Compression Spring the section “Resetting Model DDX Non-Interlock Preaction Systems.” Note: Parts list provided for information only. Available only as an assembly; individual parts are not available.
  • Page 14 Model DDX (Screw-In Seat Configuration) Deluge Valves Parts List Part No. Item 2" 2½" 3" 4” 6” 8" Part Description QTY. Material 76mm 165mm (50mm) (65mm) (80mm) (100mm) (150mm) (200mm) 91006011 91006012 91006023 91006013 91006005 91006027 91006007 91006028 Valve Body Groove/Groove...

  • Page 15: Service Kits

    Model DDX (Screw-In Seat Configuration) Deluge Valves Parts List (Continued) Part No. Item 2" 2½" 3" 4” 6” 8" Part Description QTY. Material 76mm 165mm (50mm) (65mm) (80mm) (100mm) (150mm) (200mm) 96406003 Stainless Steel UNS S30400 Lever Spring 96406004 96406005...
  • Page 16 End to end take out of Model DDX valve with grooved inlet. End to end take out of Model DDX valve with flanged inlet where available (see page 10; also reference Bulletin 519). Not applicable to 76mm or 165mm systems, or systems using a flanged inlet Model DDX valve.