Table of Contents
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Instructions for
Installation, Operation,
Care, and Maintenance
10 PSI (0,7 bar) Pneumatic Supervising Pressure
With Electric / Pneumatic Actuation
Controlled by a Cross-Zoned Releasing Control Panel
Type D System
The Reliable Automatic Sprinkler Co., Inc., 103 Fairview Park Drive, Elmsford, New York 10523
Double Interlock
Preaction System - Type D
2" (50mm), 2-1/2" (65mm),
3" (80mm) & 76mm Sizes
Available with 175 psi (12,1 bar) or
250 psi (17,2 bar) Rated Solenoid
Valve
Externally Resettable Clapper
One Main Drain
Bulletin 737
B
Rev.
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Summary of Contents for Reliable Double Interlock Preaction System D
- Page 1 Care, and Maintenance One Main Drain 10 PSI (0,7 bar) Pneumatic Supervising Pressure With Electric / Pneumatic Actuation Controlled by a Cross-Zoned Releasing Control Panel Type D System The Reliable Automatic Sprinkler Co., Inc., 103 Fairview Park Drive, Elmsford, New York 10523...
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Page 2: General Description
At the heart of Reliable’s Type D Double Interlock tion from inadvertent water flow into the sprinkler system Preaction System is the Model DDX Deluge Valve. This piping. -
Page 4: System Operation
Elbow, ¾ Valve is hydraulically established to withhold the supply " 96920912 Flex Line, ½ water from the sprinkler system piping. The Reliable 98248000 Gauge, Pressure, Air Model DDX Deluge Valve is shown in both closed and 98248001 Gauge, Pressure, Water open positions in Fig. - Page 5 Whenever a fire and a low system air pressure condi- in and turning the reset knob at the rear of the valve (see Fig 1). The external reset feature of the Model DDX De- tion are detected, the energized solenoid valve vents the push rod chamber to atmosphere through the chamber’s luge Valve provides a means for simple, economical sys- outlet.
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Page 6: System Design Considerations
To adjust the system pneumatic pressure between 7 working pressures up to and including 150 psi are to be and 10 psi (0,5 and 0,7 bar) refer to Reliable Bulletin 251. hydrostatically tested at a water pressure of 200 psi and The low air pressure alarm switch (Item #5, Fig. -
Page 8: System Electrical Requirements
2” (50mm), 2 ” (65mm), 3" (80mm) and (Form C) contacts rated at 10.0 A @ 125/250 VAC 76mm Reliable Model DDX Deluge Valve. Deluge Valve and 2.5 A @ 6/12/24 VDC. The pressure switch shall shall be a [2” (50mm)] [2 ”... - Page 9 Reliable Nitrogen Regulating Device pressure rating of 250 psi (17,2 bar) and shall be factory This device is to be used in conjunction with the Reliable adjusted to operate at a pressure of 4 to 8 psi (0,27 to 0,55 Model A-2 Pressure Maintenance Device.
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Page 10: Technical Data
5. Shipping weight: Technical Data Reliable Type D Double Interlock Preaction Systems, Valve Size Weight with associated trim, sizes 2” (50mm), 2½" (65mm), 3” 2" (50mm) (80mm) and 76mm, are rated for use at minimum water 2.5" (65mm) 34lb. (15 kg) supply pressure of 20 psi (1,4 bar) and maximum supply 3"... -
Page 11: Inspection And Testing
Note: All detection devices must be reset before the Valve’s water seat is tight. Inspect the bleed hole (see releasing/control panel can be reset. Fig. 5) on the underside of the push rod chamber for leak- Close valve G (Fig. 6). Open the ¼” globe valve in the age. - Page 12 Models DDX 2" (50mm), 2½" (65mm), 3" (80mm) & 76mm Deluge Valve Parts List Part Number Item Part Description Req'd 2" Valve " Valve 3" Valve 76mm 91006011 91006012 91006013 91006023 Body, Machined 94617001 94617002 94617003 94617004 Plate, Size 92126066 Cover, Pushrod ", ZN PLTD, Grade A 91106123...
- Page 13 This condition can be caused by leakage past the Using Reliable P/N 6881603000 Seat Wrench, remove system side of the Model DDX Deluge Valve’s seal the seat by unscrewing. This will loosen the seat-clap- faceplate subassembly (#8, Fig.
- Page 14 Fig. 6...
- Page 15 Solenoid Valv Individual Parts (DDX Valve Sold Separately 6503002449 Note: For metric installations, a 1¼" NPT x R1¼, ISO 7/1 x Close Nipple (Reliable P/N 98543403) is sold Separately as an adapter for the single drain outlet of the trims.
- Page 16 Tank Mounted Gast H-10-0801 Nitrogen Regulating Device Regulator with Optional Low Air Pressure Switch Reliable 253 System Equipment Manufacturers (A) Notifier (D) System Sensor (B) The Reliable Automatic Sprinkler Co., Inc. (E) Gast Manufacturing Corp. (C) Potter Electric Signal Company...
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Page 18: Installation Dimensions
Installation Dimensions Installation Dimensions in Inches (mm) VALVE 2" (50mm) 2½" (65mm) 6½ 12½ 32½ 3½ 5¼ 5½ (152) 3" (80mm) (165) (203) (318) (483) (826) (89) (133) (140) (197) (438) (171) (210) (248) (95) (57) & 76mm * Total take out dimension for Fully Assembled to DDX Valve w/Control Valve Configurations: 2"... - Page 19 SOLENOID VALVE INSPECTIONS, TESTS AND MAINTENANCE WARNING: THE OWNER IS RESPONSIBLE FOR MAINTAINING THE FIRE PROTECTION SYSTEM IN PROPER OPERATING CONDITION. ANY SYSTEM MAINTENANCE OR TESTING THAT INVOLVES PLACING A CONTROL VALVE OR DETECTION SYSTEM OUT OT SERVICE MAY ELIMINATE THE FIRE PROTECTION OF THAT SYSTEM. PRIOR TO PROCEEDING, NOTIFY ALL AUTHORITIES HAVING JURISDICTION.
- Page 20 Mutual Research Corporation, or other similar organizations and also with the provisions of governmental codes or ordinances whenever applicable. Products manufactured and distributed by Reliable have been protecting life and property for over 90 years, and are installed and serviced by the most highly qualified and reputable sprinkler contractors located throughout the United States, Canada and foreign countries.
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