Reliable DDX Instructions For Installation, Operation And Maintenance Download Page 8

Technical Data

Reliable Double Interlock Type D Preaction Systems, with 

associated trim, size 2” (50 mm), 2½” (65 mm), 76 mm, 
3” (80 mm), 4” (100 mm), 165 mm, 6” (150 mm), 8” (200 
mm) are rated for use at minimum water supply pressure of 
20 psi (1.4 bar) and maximum supply pressure of 250 psi 
(17.2 bar) for 2” (50mm), 21/2” (65mm), 3” (80mm), 76mm 
and 8” (200mm) valve sizes and 300 psi (20.7 bar) for 4” 
(100mm), 6” (150mm) and 165mm valve sizes. Water sup-
plied to the inlet of the valve and to the pushrod chamber 
must be maintained between 40°F (4°C) and 140°F (60°C).

The following list of technical bulletins pertains to valves 

and devices that may be used in this preaction system:

Deluge Valve 

Reliable 519

Hydraulic Emergency Station
(Model A)

Reliable 506

Mechanical Sprinkler Alarm

Reliable 612/613

Pressure Maintenance Device 

Reliable 251

Nitrogen Regulating Device                             Reliable 254

Releasing/Control Panel

Potter #5403550

Low Air Pressure Supervisory Switch Potter 5400928

Waterflow Pressure Alarm Switch 

Potter 5400928

Model DDX Deluge Valve Description

1.  Rated working pressure:

Valve & System - 250 psi (17.2 bar) for 2” (50mm), 2

1

/

2

” (65mm), 

3” (80mm), 76mm and 8” (200mm) valve sizes and 300 psi (20.7 
bar) for 4” (100mm), 6” (150mm) and 165mm valve sizes.

2.  Factory tested to a hydrostatic pressure of 500 psi (34.5 bar) for 

2” (50mm), 2

1

/

2

” (65mm), 3” (80mm), 76mm and 8” (200mm) 

valve sizes and 600 psi (41.7 bar) for 4” (100mm), 6” (150mm) 
and 165mm valve sizes. (Valve only)

3.  End and trim connections:

• 

ANSI/AWWA C606 grooved inlet and outlet

Nominal Pipe 

Size

Outlet Diam-

eter

Groove 

Diameter

Groove 

Width

Outlet Face 

to Groove

2”

(50 mm)

2.375”

(60 mm)

2.250”

(57 mm)

11/32”

(9.0 mm)

5/8”

(16 mm)

2½”

(65 mm)

2.875”

(73 mm)

2.720”

(69 mm)

11/32”

(9.0 mm)

5/8”

(16 mm)

76 mm

3.000”

(76 mm)

2.845”

(72 mm)

11/32”

(9.0 mm)

5/8”

(16 mm)

3”

(80 mm)

3.500”

(89 mm)

3.344”

(85 mm)

11/32”

(9.0 mm)

5/8”

(16 mm)

4”

(100 mm)

4.500”

(114 mm)

4.334”

(110 mm)

3/8”

(9.5 mm)

5/8”

(16 mm)

165 mm

6.500”

(165 mm)

6.330”

(161 mm)

3/8”

(9.5 mm)

5/8”

(16 mm)

6”

(150 mm)

6.625”

(168 mm)

6.455”

(164 mm)

3/8”

(9.5 mm)

5/8”

(16 mm)

8”

(200 mm)

8.625”

(219 mm)

8.441”

(214 mm)

7/16”

(11 mm)

3/4”

(19 mm)

•     Threaded openings Per ANSI B 2.1

•     Flange Dimensions

Flange 

Type:

Nominal 

Pipe 

Size

Bolt 

Circle 

Diameter

Bolt

Hole

Diameter

Flange 

Outside 

Diameter

Flange 

Thick-

ness

Number

of

 Bolts

ASME B16.5 

Class 150

4” 

(100mm)

7½” 

(191mm)

¾”

(19mm)

9” 

(229mm)

15

/

16

(24mm)

8

ISO 7005-2 

PN16

4” 

(100mm)

7

3

/

32

” 

(180mm)

¾”

(19mm)

9” 

(229mm)

15

/

16

(24mm)

8

ASME B16.5 

Class 150

6” 

(150mm)

9½” 

(241mm)

7

/

8

” 

(22mm)

11” 

(279mm)

15

/

16

(24mm)

8

ISO 7005-2 

PN16

6” 

(150mm)

9

7

/

16

” 

(240mm)

29

/

32

” 

(23mm)

11” 

(279mm)

15

/

16

(24mm)

8

ASME B16.5 

Class 150

8” 

(200mm)

11¾” 

(298mm)

7

/

8

” 

(22mm)

13½” 

(343mm)

1” 

(25.4mm)

8

ISO 7005-2 

PN16

8” 

(200mm)

11

5

/

8

” 

(295mm)

29

/

32

” 

(23mm)

13½” 

(343mm)

1” 

(25.4mm)

12

4.  Valve Color:

Valve Size

Color

2” (50 mm)

Black or Red

2½” (65 mm)

Black or Red

76 mm

Red

3” (80 mm)

Black or Red

4” (100 mm)

Black or Red

165 mm

Red

6” (150 mm)

Black or Red

8” (200 mm)

Black or Red

5.  Face to face dimensions:

Valve Size:

End

Connection:

End to End:

2" (50mm), 2½" (65mm), 

76mm & 3" (80mm)

Groove/ Groove

12½" (318mm)

4" (100mm)

Groove/ Groove

14" (356mm)

Flange/ Groove

16" (406mm)

Flange/ Flange

16" (406mm)

6" (150mm) & 165mm

Groove/ Groove

16" (406mm)

Flange/ Groove

19" (483mm)

Flange/ Flange

19" (483mm)

8" (200mm)

Groove/ Groove

19

3

/

8

” (492mm)

Flange/ Flange

21¼" (540mm)

6.  Valve shipping weight:

Valve Size:

End Connection:

Weight:

2" (50mm), 2½" (65mm), 

76mm & 3" (80mm)

Groove/ Groove

34 lbs (15 kg)

4" (100mm)

Groove/ Groove

64 lbs (29 kg

Flange/ Groove

79 lbs (36 kg)

Flange/ Flange

92 lbs (42 kg)

6" (150mm) & 165mm

Groove/ Groove

95 lbs (43 kg)

Flange/ Groove

122 lbs (56 kg)

Flange/ Flange

138 lbs (69 kg)

8" (200mm)

Groove/ Groove

148 lbs (67 kg)

Flange/ Flange

197 lbs (90 kg)

7.  Trim shipping weight:

Trim Configuration

2” (50 mm),

2½” (65 mm),

3” (80 mm)

& 76 mm

4” (100 mm),
6” (150 mm),

8” (200 mm)

& 165 mm

Type D Double Interlock

47 lbs (21 kg)

52 lbs (24 kg)

8.

Summary of Contents for DDX

Page 1: ...m 165 mm 8 200 mm Bulletin 750 October 2022 Bulletin 750 October 2022 Technical Specifications 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 ...

Page 2: ...in on 4 100 mm 165 mm 6 150 mm and 8 200 mm valve sizes alarm devices air supply and required pressure gauges This trim set is avail able in individual loose parts in time saving segmented assembled kit forms or fully assembled to the Model DDX Deluge Valve with or without a control valve Listings Approvals Only when used with Reliable Trim Sets 1 Reliable s Type D Double Interlock Preaction Syste...

Page 3: ...RT ALARM PORT OUTLET EXTERNAL RESET HINGE RESTRICTION PUSH ROD CHAMBER INLET PUSH ROD CHAMBER OUTLET PUSH ROD CLAPPER IN LATCHED POSITION CLAPPER IN OPEN POSITION LEVER CLAPPER IN CLOSED POSITION INLET WEEP HOLE TO RESET CLAPPER NOTE PUSH ROD CHAMBER MUST BE VENTED TO DRAIN MODEL DDX VALVE SECTION VIEW MODEL DDX VALVE REAR VIEW Fig 1 3 ...

Page 4: ... Manual Emergency Pull Box see Reliable Bulletin 506 is also available and can be provided as an option Whenever ambient temperature conditions are high the water temperature in the Model DDX Deluge Valve push rod chamber could possibly increase thereby increasing the pressure in the chamber to values exceeding the rated pressure of the system In an indoor installation where stan dard room tempera...

Page 5: ...ed from improper fire pump settings un derground construction work or an improper venting of trapped air in the water supply piping System Design Considerations The automatic sprinklers releasing devices electric re leasing control equipment fire detection devices manual pull stations and signaling devices which are utilized with the Type D Double Interlock Preaction System must be UL or ULC Liste...

Page 6: ...ve seat Del uge valve shall have an external reset knob for resetting the clapper without requiring the removal of the valve face plate Pushrod chamber design shall consist of a stainless steel piston pushrod and spring assembly with diaphragm seal secured to the casting through a pushrod guide con structed of a synthetic engineering plastic to resist corro sion Casting shall have a bleeder hole l...

Page 7: ...erlock preaction system piping and be capable of restoring normal air pressure in the system within the time limits specified by NFPA 13 Unit shall include a mo tor mounted oil less piston compressor pressure gauge pressure switch check valve drain valve and safety relief valve Single phase motor shall have internal thermal pro tection Nitrogen Nitrogen cylinders provided by an approved source sha...

Page 8: ... 80 mm 3 500 89 mm 3 344 85 mm 11 32 9 0 mm 5 8 16 mm 4 100 mm 4 500 114 mm 4 334 110 mm 3 8 9 5 mm 5 8 16 mm 165 mm 6 500 165 mm 6 330 161 mm 3 8 9 5 mm 5 8 16 mm 6 150 mm 6 625 168 mm 6 455 164 mm 3 8 9 5 mm 5 8 16 mm 8 200 mm 8 625 219 mm 8 441 214 mm 7 16 11 mm 3 4 19 mm Threaded openings Per ANSI B 2 1 Flange Dimensions Flange T ype Nominal Pipe Size Bolt Circle Diameter Bolt Hole Diameter Fl...

Page 9: ... M M 1 6 5 M M 6 I N C H 1 5 0 M M 1 6 5 M M 4 I N C H 1 0 0 M M 4 I N C H 1 0 0 M M 3 I N C H 8 0 M M 3 I N C H 8 0 M M 2 1 2 I N C H 6 5 M M 7 6 M M 2 1 2 I N C H 6 5 M M 7 6 M M 2 I N C H 5 0 M M 2 I N C H 5 0 M M 1 5 10 50 100 500 0 1 0 5 PRESSURE LOSS BAR 0 1 1 10 10 100 1000 10000 FLOW RATE GPM PRESSURE LOSS PSI Fig 3 ...

Page 10: ...ion of the detection system and or sprinkler system subjected to fire conditions 8 Open the pushrod chamber supply valve and allow wa ter to fill the pushrod chamber Close the Model B Manual Emergency Station 9 Bleed all air from the actuation piping Open the so lenoid valve by operating a detector or an electric manual emergency station While water is flowing through the sole noid valve cause it ...

Page 11: ...then tighten se curely Ref Bulletin 613 2 Water leaking from Ball Drip This can be caused by either a water column on top of the clapper or a supply water leakage a Leakage due to water column This condition is caused by leakage past the clapper seal assembly Be sure the clapper seal and seat are free of any type of de bris or damage If nec essary follow steps below to replace the seal assembly an...

Page 12: ...em b Shut down the valve controlling water supply to the Del ugeValve Relievetheinletpressurebyopeningthemaindrain valve Close the pushrod chamber supply valve and open the Model B Manual Emergency Station c Remove the trim at the unions nearest to the pushrod chamber cover d Take the pushrod chamber cover off by removing the six retaining screws e Visually inspect the pushrod chamber cover and pi...

Page 13: ...13 750EXP_A Fig 4 ...

Page 14: ...1 10 37 8 30 33 20 31 5 16 36 2 42 5 6 34 38 9 IMPORTANT NOTE Early generation 4 and 6 DDX valves may incorporate a brass drop in seat Prior to ordering replacement parts confirm the presence of a stainless steel screw in seat or brass drop in seat For replacement parts for valves with brass drop in seat please contact Reliable Sprinkler Company Technical Services techserv reliablesprinkler com 29...

Page 15: ...1 Stainless Steel CF8M 18 95276006 Diaphragm 1 EPDM Polyester 19 95306267 N A N A N A RetainingRing 3 8 Shaft LeverPin 2 Stainless Steel 15 7 or 17 7 N A 95306267 N A N A RetainingRing Shaft LeverPin N A N A 95306269 N A Retaining Ring 5 8 Shaft Lever Pin N A N A N A 95316408 Retaining Ring Shaft Lever Pin 20 95306268 N A N A N A RetainingRing 3 8 Shaft HingePin 2 Stainless Steel 15 7 or 17 7 N A ...

Page 16: ... Size End Configuration Trim Assembly Loose Trim Segmentally Assembled Fully Assembled no Control Valve Fully Assembled with Control Valve Optional 300 psi 20 7 bar solenoid valve Note This trim assembly will include a spool piece with 1 4 outlet to accommodate push rod chamber supply piping Not available for 76mm or 165mm systems or systems using a flanged inlet Model DDX valve Service Kits Servi...

Page 17: ...t 2 End to end take out of Model DDX valve with flanged inlet where available see page 8 also reference Bulletin 519 3 Not applicable to 76mm or 165mm systems or systems using a flanged inlet Model DDX valve 4 2 systems include spool piece with outlet below valve dimension provided is total length of both components Reliable Automatic Sprinkler Co Inc 800 431 1588 Sales Offices 800 848 6051 Sales ...

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