Instruction manual

ManualsBrandsReliable ManualsHome building and DecorSingle Interlock Preaction System

System Operation

To fully operate a Single Interlock Preaction System, two

independent events must coexist before water flow will oc-

cur. One electrical detector (two detectors in a cross-zoned

system) must activate and a sprinkler head must open. Op-

eration of either one of these items will only cause an alarm

to annunciate, but will not cause water to discharge from the

sprinkler system piping.

When set correctly for service, the Model DDX Deluge

Valve is hydraulically established to withhold the supply

water from the sprinkler system piping. The Reliable Model

DDX Deluge Valve is shown in both the closed and open

positions in Fig.1. In the closed position, the supply pres-

sure acts on the underside of the clapper and also on the

push rod through the push rod chamber’s inlet restriction.

The resultant force due to the supply pressure acting on the

push rod is multiplied by the mechanical advantage of the

lever and is more than sufficient to hold the clapper closed

against normal supply pressure surges.

When a fire is detected, the energized solenoid valve vents

the push rod chamber to atmosphere through the chamber’s

outlet. Since the pressure cannot be replenished through

the inlet restriction as rapidly as it is vented, the push rod

chamber pressure falls instantaneously. When the push rod

chamber pressure approaches approximately one-third of

the supply pressure, the upward force of the supply pres-

sure acting beneath the clapper overcomes the lever-ap-

plied force thereby opening the clapper.

Single Interlock Electric Release Preaction Trim Parts List (Refer to Fig. 2)

Item

No.

Part No. Description Qty.

6103060024

Assembly, Valve, 6” (150mm)

For 6” Ass’y Only

6103040026

Assembly, Valve, 4” (100mm

For 4” Ass’y Only

6215052400

Wafer-butterfly Valve, 6”

For 6” Ass’y Only

6215051600

Wafer-butterfly Valve, 4”

For 4” Ass’y Only

7g05242400

Coupling, Rigid, 6”

For 6” Ass’y Only

7g05161600

Coupling, Rigid, 4”

For 4” Ass’y Only

7d05464200

Coupling, 6” Grooved W/ 1” Npt Outlet

For 6” Ass’y Only

7d05444200

Coupling, 4” Grooved W/ 3/4” Npt Outlet

For 4” Ass’y Only

98048028

Bushing Reducer, 1” X 1/4”, Galv.

For 6” Ass’y Only

98048025

Bushing Reducer, 3/4” X 1/4”, Galv.

For 4” Ass’y Only

6871010000 Valve, Solenoid (175 Psi) 175 Psi Rated

6871020020 Valve, Solenoid (250 Psi) 250 Psi Rated

7 78653000 Assembly, Manual Emergency Station 1

8 78653004 Assembly, Valve Caution Station, 1/2” 1

9 78653100 Valve, Ball Drip, 1/2” 1

10 92056702 Connector, 3/8” Tubing X 1/4” Npt 1

11 92056703 Elbow, Male, 3/8” Tube X 1/4” Npt 1

12 92056810 Connector, 3/8” ID Tube X 1/2” Npt 1

13 92056704 Connector, Elbow, 3/8” ID Tube X 1/2” Npt 1

14 92056705 Connector, Elbow, 3/8” ID Tube X 1/4” Npt 1

15 94616917 Nameplate, Single Interlock 1

16 96606601 Tee, Glvn., 3/4” 1

17 96606607 Tee, Glvn., 1/2” X 1/2” X 1/4” 1

18 96606612 Tee, Glvn., 3/4” X 1/2” X 1/2” 1

19 96606627 Tee, Glvn, 2” X 2” X 1” 1

20 96920912 Flex Line, 12” 1

21 98048015 Bushing, Reducer, 2” Spigot X 1” Nptf, Pvc 1

22 98048022 Bushing, Reducer, 3/4” X 1/2”, Galv. 1

23 98048025 Bushing, Reducer, 3/4” X 1/4”, Galv. 1

24 98050004 Drain Cup, Pvc 1

25 98174401 Ell, 1/2”, Mall Iron, Galv. 1

26 98174402 Ell, 3/4”, Mall Iron, Galv. 2

27 98174403 Ell, 1”, Mall Iron, Galv. 1

28 98174404 Ell, 1/4”, Mall Iron, Galv. 1

29 98174405 Ell, 2”, Mall Iron, Galv. 1

30 98248000 Gauge, Air Pressure (0-80 Psi) 1

31 98248001 Gauge, Water Pressure (0-300 Psi) 2

32 98543208 Nipple, Steel, Galv., 2” X 3” 2

33 98543209 Nipple, Steel, Galv., 1/2” X 2” 2

34 98543210 Nipple, Steel, Galv., 1/2” X 2-1/2” 1

35 98543213 Nipple, Steel, Galv., 1” X Close 1

36 98543220 Nipple, Steel, Galv., 1/4” X 3” 2

37 98543222 Nipple, Steel, Galv., 1” X 3-1/2” 1

38 98543223 Nipple, Steel, Galv., 1/2” X 1-1/2” 10

39 98543226 Nipple, Steel, Galv., 1/4” X 1-1/2” 2

40 98543228 Nipple, Steel, Galv., 1/2” X 4-1/2” 1

41 98543230 Nipple, Steel, Galv., 1/2” X 3” 2

42 98543237 Nipple, Steel, Galv., 1/2” X 8” 1

Item

No.

Part No. Description Qty.

43 98543238 Nipple, Steel, Galv., 2” X Close 1

44 98543244 Nipple, Steel, Galv., 1/4” X 2” 1

45 98543266 Nipple, Steel, Galv., 1” X 6” 1

46 98543279 Nipple, Steel, Galv., 3/4” X Close 3

47 98604406 Plug, Iron, Sq. Hd., 1/2” 1

48 98614401 Plug, Iron, Sq. Hd., 3/4” 2

49 98614403 Plug, Iron, Sq. Hd., 1/4” 3

50 98727607 Strainer, 1/4” 1

51 98750003 Pipe Cross, 1/2”, Galv. 1

52 98761649 Tee, Glvn., 1/2” X 1/4” X 1/2” 1

53 98761651 Tee, Glvn., 1/2” 1

54 98815200 Union, 1/2”, Iron, Galv. 2

55 98815204 Union, “O” Ring Seal, Galv., 1/2” 1

56 98840100 Valve, Angle, 2” 1

57 98840117 Valve, Ball, 1/4” Nptf X 1/4” Nptm 1

58 98840145 Swing Check Valve, 1” Npt 1

59 98840147 Check Valve, 1/4” Npt, Poppet Type Inline 1

60 98840160 Valve, 3-way, 1/4” 3

61 98840171 Valve, Globe, 1/2” 1

62 98840172 Globe Valve, 1/4” 1

63 98840181 Horiz. Swing Check Valve, 1/2” Npt 1

64 98840187 Valve, Check, 1/4” Nptf X 1/4” Nptm 1

65 99080002 Pad-adhesive 1

66 89141112 Tie, Retaining 9

67 ----- ----- --

68 96686756 Tubing, Pvc, 3/8” ID X 6 Ft. 1

69 98768008 Copper Tubing, 3/8” 30”