RELIABLE Single Interlock Preaction System 6103040026 739 LPCB DDX
User Manual: RELIABLE Single Interlock Preaction System 6103040026
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Reliable Automatic Sprinkler Co., Inc., 103 Fairview Park Drive, Elmsford, New York 10523
Single Interlock
Preaction System
Bulletin 739 Rev. C
Bulletin 739 Rev. C
Instructions for
Installation, Operation,
Care and Maintenance
For Single Interlock Preaction Systems
With Dual Solenoid Actuation
Of Pneumatic Pilot Release
4”(100mm),
6”(150mm) & 165mm
Sizes with Trim
• LPCB Approved
• Redundant Solenoid Valve
Release
• Rated to 175 psi (12.1 bar)
• Externally Resetable
Clapper
• One Main Drain
2.
General Description
Reliable Single Interlock Preaction Systems are de-
signed for water-sensitive areas that require protection
from inadvertent water flow into the sprinkler system pip-
ing.
Sprinkler piping in single interlock systems can ef-
fectively be supervised by means of a Reliable Model
A-2 Pressure Maintenance Device and a tank-mounted
air compressor. Loss of supervising pneumatic pres-
sure, due to a damaged sprinkler or sprinkler pipe will
not cause water to flow through the Model DDX Deluge
Valve and into the system piping. A significant loss of
pneumatic pressure will activate a trouble-annunciating
device when the system pressure falls below a predeter-
mined pressure level.
When one electrical detector senses the presence of
fire, the electrical releasing control panel activates fire
alarm devices and energizes the two redundant, normal-
ly-closed solenoid valves in the open position (Note: Ar-
ranging detectors in a cross-zoned pattern will require
operation of two detectors before the solenoid valves can
open). These solenoid valves, when closed, retain suf-
ficient AIR pressure in the Model LP Pilot Line Actuator,
which in turn preserves sufficient WATER pressure in the
push rod chamber of the Model DDX Deluge Valve in or-
der to maintain it closed.
Energizing the solenoid valves relieves the air pressure
in the Model LP Dry Valve Actuator (see Fig. 8), thereby
releasing the water pressure that it was retaining. This is
turn relieves the pressure in the push rod chamber of the
Model DDX Deluge Valve. Venting this push rod cham-
ber will open the Model DDX Deluge Valve and allow wa-
ter to flow into the sprinkler system.
To fully operate a cross-zoned single interlock system,
two electrical detectors must activate and a sprinkler
head must open. During the early stages of a fire, smoke
or heat activates the first detector, which causes the con-
trol panel to produce a local alarm and an alarm at the
main fire alarm panel. Electrical relays inside the releas-
ing control panel can be used to shut down airmoving
equipment or activate security doors and other electrical
devices. Subsequent activation of a second, nearby or
adjacent detector will cause the panel to energize the
solenoid valves open and release water into the sprinkler
system piping. Water flowing into the sprinkler system
piping will simultaneously produce water pressure that
causes the transfer of contacts in the pressure switch
mounted in the trim. This pressure switch can electri-
cally initiate the shutdown or startup of equipment, such
as computers or other second alarm devices. This flow of
water into the sprinkler system piping effectively converts
the dry system into a wet pipe system. In the event that
the fire subsequently produces sufficient heat to operate
a sprinkler head, water will flow from that sprinkler, con-
trolling or suppressing the fire.
The major benefits of a single interlock preaction sys-
tem, when compared with a wet pipe (deluge) system are
as follows:
A. A fire alarm sounds prior to the operation of a sprinkler
head, which may enable extinguishing the fire by handheld
means before the actual operation of any sprinklers and
subsequent water damage.
B. A trouble annunciator signals whenever the integrity of
the piping or sprinklers is accidentally or intentionally dis-
turbed; however, no water flow or water damage will occur
at that time.
C. Speedy detection and an early fire alarm are provided
by fire detectors, without the delay associated with water
delivery time in the event of a fire. Note: with a wet pipe
system, the fire alarm is delayed until after water has begun
flowing from an operated sprinkler head.
At the heart of Reliable’s Single Interlock Preaction Sys-
tem is the Model DDX Deluge Valve. This Deluge Valve
is a hydraulically operated, straight-through-design, dif-
ferential-type valve (see Fig. 1). System maintenance is
simplified since priming water is not required and the del-
uge valve can be reset externally without cover removal.
This is accomplished by pushing in and turning the ex-
ternal reset knob at the rear of the deluge valve (see Fig.
1). This feature provides a significant system-restoration
time advantage.
The Reliable Single Interlock Preaction System trim set
(see Fig. 2) provides all of the necessary equipment for
connections to the Model DDX Deluge Valve’s pushrod
chamber inlet and outlet ports, the 2” (50mm) main drain,
alarm devices, air supply, water supply, and required
pressure gauges. This trim set is available in individual
parts, in time-saving, segmentally assembled kit forms,
or fully assembled to the Model DDX Deluge Valve.
Listing & Approvals
The 4” (100mm), 6” (150mm) and 165mm Single Inter-
lock Preaction Systems shown in this bulletin must only
be used in the combination described herein to be Loss
Prevention Certification Board (LPCB) approved. Instal-
lation of these systems must be according the require-
ments of Technical Bulletin TB208.
The majority of the system’s components are individu-
ally Listed by Underwriters Laboratories Inc. and Factory
Mutual Approved.
Fig. 1
3.
Loss Prevention Certification Board (LPCB)
Installation Requirements of
Preaction systems Include:
1. Solenoid valves shall be installed in parallel.
2. Solenoid valves shall function in pneumatic conditions only,
and be protected by a strainer.
3. LPCB Certified detectors compatible with the control and
indicating equipment shall be used.
4. Suitable electrical detection, control and indicating equip-
ment and pneumatic systems shall be used. The control
and indicating equipment shall be LPCB approved / cer-
tificated.
5. Connecting cables shall comply with BS 6387:1983, clas-
sification C, W, Z evidenced by LPCB certification.
6. Pre-action systems shall be electrically monitored to dem-
onstrate that they are in a ‘ready to operate’ state at all times.
7. Clear dry air shall be used. Compressor tank must have
provision for draining.
8. Pre-action system equipment shall be installed, operated
and maintained as prescribed in the firm’s installation , op-
erating and maintenance manual.
9. Pre-action systems shall be configured in accordance with
the manufacturer’s defined specifications.
10. Pre-action systems shall comply with the details specified
in the related LPC Technical Bulletin (Ref. TB21).
11. The firm responsible for the complete pre-action station, in-
cluding electrics, shall be identified.
12. Normally un-energized solenoids may be used, provided
that they are continuously monitored for ‘open’ and ‘short
circuit.’
System Operation
To fully operate a Reliable Single Interlock Preaction
System, two independent events must coexist before wa-
ter flow will occur. One electrical detector (two detectors
in a cross-zoned system) must activate and a sprinkler
head must open. Operation 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 sup-
ply water from the sprinkler system piping. The Reliable
Model DDX Deluge Valve is shown in both closed and
open positions in Fig.1. In the closed position, the supply
pressure 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 pres-
sure acting on the push rod is multiplied by the mechani-
cal advantage of the lever and is more than sufficient to
hold the clapper closed against normal supply pressure
surges.
4.
Fig. 2
5.
ITEM
NO.
PART
NUMBER DESCRIPTION NO
REQ’D
1 6103040026 MODEL DDX VALVE, ASSEMBLY,
4” (100MM) 1
1 6103060024 MODEL DDX VALVE,ASSEMBLY,
6” (150MM) 1
6103060028 MODEL DDX VALVE,ASSEMBLY,
165 MM
2 78653004 ASSEMBLY, VALVE
CAUTION STATION, 1/2” 1
3 98048000 BUSHING, REDUCER,
1/2” x 1/4”, GALV. 4
4 98048015 BUSHING, REDUCER,
2” SPIGOT x 1” NPTF, PVC 1
5 98048022 BUSHING, REDUCER,
3/4” X 1/2”, GALV. 1
6 98048025 BUSHING, REDUCER,
3/4” X 1/4”, GALV. 2
7 92056809 CONNECTOR ASSEMBLY,
NO-LOSS, 3/8 x 1/2 NPT 1
8 92056810 CONNECTOR,
3/8” ID TUBE x 1/2” NPT 1
9 -- -- --
10 92056702 CONNECTOR,
3/8” TUBING x 1/4” NPT 1
11 92056704 CONNECTOR, ELBOW,
3/8” ID TUBE x 1/2” NPT 1
12 98085666 REDUCER, 1/2” x 1/4” 4
13 98050004 DRAIN CUP, PVC 1
14 98174400 ELBOW, STREET, 1/2” 1
15 98174403 ELL, 1” 1
16 98174401 ELL, 1/2” 1
17 98174404 ELL, 1/4” 1
18 98174405 ELL, 2” 1
19 98174402 ELL, 3/4” 2
20 96920912 FLEX LINE, 12” 1
21 98240006 GAUGE, WATER PRESSURE
(16 BAR) W/ CONNECTOR 2
22 98240101 GAUGE, WATER PRESSURE
(6 BAR) W/ CONNECTOR 2
23 6304000100 MOD. A-2 AUTO AIR
MAINTENANCE DEVICE, 10PSI 1
24 78653000 MODEL B MANUAL
EMERGENCY STATION 1
25 71030010 MODEL LP DRY VALVE
ACTUATOR 1
26 94616917 NAMEPLATE,SINGLE INTERLOCK 1
27 98543222 NIPPLE, STEEL, 1” X 3-1/2” 1
28 98543266 NIPPLE, STEEL, 1” X 6” 1
29 98543213 NIPPLE, STEEL, 1” X CLOSE 1
30 98543223 NIPPLE, STEEL, 1/2” X 1-1/2” 17
31 98543210 NIPPLE, STEEL, 1/2” X 2-1/2” 1
32 98543216 NIPPLE, STEEL, 1/2” X 3-1/2” 1
33 98543209 NIPPLE, STEEL, 1/2” X 2” 2
34 98543230 NIPPLE, STEEL, 1/2” X 3” 1
35 98543211 NIPPLE, STEEL, 1/2” X 6-1/2” 1
36 98543226 NIPPLE, STEEL, 1/4” X 1-1/2” 19
37 98543225 NIPPLE, STEEL, 1/4” X 2-1/2” 1
38 98543244 NIPPLE, STEEL, 1/4” X 2” 3
39 98543220 NIPPLE, STEEL, 1/4” X 3” 2
40 98543243 NIPPLE, STEEL, 1/4” X 4” 1
41 98543227 NIPPLE, STEEL, 1/4” X CLOSE 1
42 98543208 NIPPLE, STEEL, 2” X 3” 2
ITEM
NO.
PART
NUMBER DESCRIPTION NO
REQ’D
43 98543238 NIPPLE, STEEL, 2” X CLOSE 1
44 98543215 NIPPLE, STEEL, 3/4” X 1-1/2” 1
45 98543233 NIPPLE, STEEL, 3/4” X 2-1/2” 1
46 98543232 NIPPLE, STEEL, 3/4” X 2” 1
47 98543279 NIPPLE, STEEL, 3/4” X CLOSE 3
48 99080002 PAD-ADHESIVE 1
49 98750003 PIPE CROSS, 1/2” 2
50 98604406 PLUG, SQ. HD., 1/2” 1
51 98614403 PLUG, SQ. HD., 1/4” 5
52 98614401 PLUG, SQ. HD., 3/4” 3
53 98681630 REGULATOR, AIR LINE 1
54 78650201 STRAINER, 1/2” NPT 1
55 98727607 STRAINER, 1/4” 1
56 96556922 SWITCH, PRESSURE,
BAILEY & MACKEY 1
57 96606627 TEE, GLVN, 2 X 2 X 1 1
58 96606607 TEE, GLVN., 1/2 X 1/2 X 1/4 1
59 98761649 TEE, GLVN., 1/2 X 1/4 X 1/2 2
60 98761651 TEE, GLVN., 1/2” 2
61 96606608 TEE, GLVN., 1/4 X 1/4 X 1/4 3
62 96606612 TEE, GLVN., 3/4 X 1/2 X 1/2 1
63 96606601 TEE, GLVN., 3/4” 2
64 89141112 TIE, RETAINING 3
65 98815204 UNION, “O” RING SEAL, 1/2” 1
66 98815200 UNION, 1/2”, IRON, G.J., GALV. 2
67 98815201 UNION, 1/4”, IRON, G.J., GALV. 3
68 98815202 UNION, 3/4”, IRON, G.J., GALV. 1
69 98840160 VALVE, 3-WAY, 1/4” 4
70 98840101 VALVE, ANGLE, 1/4” 1
71 98840100 VALVE, ANGLE, 2” 1
72 78653100 VALVE, BALL DRIP, 1/2” 1
73 98840110 VALVE, BALL, 1/4” 1
74 98840144 VALVE, CHECK GAUGE 2
75 98840145 VALVE, CHECK, 1” 1
76 98840181 VALVE, CHECK, 1/2” 1
77 98840171 VALVE, GLOBE, 1/2” 1
78 6871020010 VALVE, SOLENOID ASCO 1
79 6871020000 VALVE, SOLENOID SKINNER 1
80 98840193 VALVE, SPRING CHECK, 1/4” 2
81 96686722 TUBING, COPPER,
3/8” O.D. X 2 FT 1
82 96686756 TUBING, PVC, 3/8” I.D. x 6 FT 1
83 92056809 CONNECTOR, NO-LOSS 4
SINGLE INTERLOCK PREACTION SYSTEM PARTS LIST (REFER TO FIG. 2)
6.
When a fire is detected, the energized solenoid valves
vent the air from the Model LP Dry Valve Actuator (see
Fig. 8), which in turn vents the push rod chamber to at-
mosphere through the chamber’s outlet. Since the pres-
sure cannot be replenished through the inlet restriction
as rapidly as it is vented, the pushrod chamber pressure
falls instantaneously. When the pushrod chamber pres-
sure approaches approximately one-third of the supply
pressure, the upward force of the supply pressure acting
beneath the clapper overcomes the lever-applied force
thereby opening the clapper.
Once the clapper has opened, the lever acts as a latch,
preventing the clapper from returning to the closed po-
sition. Water from the supply flows through the deluge
valve into the system piping. Water also flows through the
deluge valve alarm outlet to the alarm devices.
After system shutdown, resetting the Model DDX Del-
uge Valve is quite simple. Doing so only requires push-
ing in and turning the reset knob at the rear of the valve
(see Fig.1). The external reset feature of the Model DDX
Deluge Valve provides a means for simple, economical
system testing, which is one essential facet of a good
maintenance program.
The external reset feature does not, however, eliminate
another important facet of good maintenance, namely,
periodic cleaning and inspection of the internal valve
parts. In the event that water builds up inside the valve
due to condensate from the air supply system or water
left inside from valve system testing, a drain is available
for venting. After closing the main supply valve, a small
valve over the drain cup can be opened slightly until the
water inside the valve body and the main pipe column
has drained. See the section titled “Draining Excess/
Condensate Water From System” in this bulletin for the
detailed procedure.
The Model B Manual Emergency Station (see Fig. 3)
is also included in the trim set. It consists of an alumi-
num nameplate mechanically attached to a ball valve.
The valve handle in its OFF position is guarded against
accidental turning to the ON position (and system dis-
charge) by a nylon cable tie provided with each trim kit.
The cable tie is inserted, as shown in Fig. 3, after the
system has been restored for operation. The nylon cable
tie is designed to allow, in case of an emergency, force-
ful turning of the valve handle to the ON position. As an
alternative to the Model B Hydraulic Manual Emergency
Station, the Model A Hydraulic 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’s
pushrod chamber could possibly increase, thereby in-
creasing the pressure in the chamber to values exceed-
ing the rated pressure of the system. In an indoor installa-
tion where standard room temperatures are exceeded, a
pressure relief kit may be needed. Pressure relief kit, P/N
6503050001, can be installed into the pushrod chamber’s
releasing line to limit the pressure to 175 psi (12,1 bar).
Pressurizing Line Connection
The water supply for the push-rod chamber must be
provided by connection of its inlet pressurizing line to the
water supply piping. Pressurizing lines for multiple Model
DDX Deluge Valve push-rod chambers must never be
manifolded together, having only a single tap on the wa-
ter supply piping. Each Model DDX Deluge Valve must
have its own push-rod chamber pressurizing line con-
nection. This connection must be made on the supply
side of the main water supply control valve. This can be
accomplished by:
a. Using a tapped connection directly below or
next to the main water supply control valve us-
ing a welded outlet or the appropriate mechani-
cal fittings. A grooved-end outlet coupling is one
way to achieve this.
b. Using a water supply control valve that has an
available threaded (NPT) supply-side tap design
to allow for a direct water supply connection to
the Model DDX Deluge Valve’s push-rod cham-
ber.
Caution: Reliable’s Model DDX Deluge Valve is de-
signed with an inlet restriction built into the pushrod
chamber. It is important not to introduce additional re-
strictions into the direct water supply connection or the
discharge from the pushrod chamber by installing ad-
ditional valves or improperly installing the copper lines
used in the trim of the valve.
Fig. 3
7.
System Design Considerations
The automatic sprinklers, air compressor, releasing
devices, electric releasing control equipment, fire detec-
tion devices, manual pull stations, and signaling devic-
es which are utilized with this Reliable Single Interlock
Preaction System must be Loss Prevention Certification
Board (LPCB) approved, as applicable.
The deluge valve and all interconnecting piping must
be located in a readily visible and accessible location
and in an area that can be maintained at a minimum tem-
perature of 40°F (4°C). Note: Heat tracing is not permit-
ted.
The redundant solenoid valves are operated and super-
vised by an electrical releasing/control panel. Details on
the electrical connections and the Prescient Pre-Action
Sprinkler Extinguishing Fire Alarm Panel can be found on
Figure 5 of this bulletin.
System Air Pressure Requirements
When a Reliable Single Interlock Preaction System is
utilized, the sprinkler system piping requires a minimum
of 7 psi (0,5 bar) supervisory pneumatic pressure. The
Model A-2 Pressure Maintenance Device, along with an
additional air pressure regulator, are used to maintain the
system’s pneumatic pressure between 7 and 10 psi (0,5
and 0,7 bar) where a dry nitrogen gas supply or a clean,
dependable, and continuous (24 hours per day, 7 days
per week) compressed air source is available.
The sections of the preaction trim that contains the two
redundant normally-closed solenoid valves, and the up-
per portion of the Model LP Dry Valve Actuator, require
pneumatic pressure settings per Table A. When estab-
lishing the preaction system for service, refer to Table A
of this bulletin for the correct pneumatic pressure settings
for a corresponding water supply pressure. Note: Dur-
ing the initial system set-up, a higher pneumatic pressure
may be required in order to properly seat the internal dia-
phragm of Model LP Dry Valve Actuator.
Refer to Reliable Bulletin 251 and/or Fig. 3 of this bul-
letin for instructions on how to modify these pressure set-
tings.
Table A
Water Pressure
psi (bar)
Pneumatic Pressure to be Pumped
into Sprinkler System, psi (bar)
Maximum Not Less Than Not More Than
20 (1,4) 10 (0,7) 14 (0,9)
50 (3,4) 12 (0,8) 16 (1,1)
75 (5,2) 13 (0,9) 17 (1,2)
100 (6,9) 15 (1,0) 19 (1,3)
125 (8,6) 16 (1,1) 20 (1,4)
150 (10,3) 17 (1,2) 21 (1,4)
175 (12,1) 18 (1,2) 22 (1,5)
System Electrical Requirements
All releasing, alarm and detection devices in this Reli-
able Single Interlock Preaction System are supervised by
the Pre-Action Panel Series 1000 MK4. Connect these
devices as shown in Fig. 5. The power supply, the stand-
by emergency power supply, battery charger, and the
rectifier circuitry are all contained within this panel. For
additional and detailed wiring information, refer to the
manufacturer’s literature included with the Prescient Re-
leasing Control Panel.
Note:
In order for the solenoid valve to maintain Reliable’s war-
ranty it must remain sealed as it came from the factory. If
there are concerns about the valve’s internal components,
immediate replacement is recommended.
Technical Data
Reliable Single Interlock Preaction Systems, with asso-
ciated trim, sizes 4” (100mm), 6” (150mm) and 165mm
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). Water supplied 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 510/511
Hydraulic Emergency Station (Model A) Reliable 506
Solenoid Valve Reliable 718
Mechanical Sprinkler Alarm Reliable 612/613
Pressure Maintenance Device Reliable 252
Air Compressor Reliable 700
Electric Emergency Station Reliable 700
Thermal/Smoke Detectors Reliable 722
Fire Alarm Devices Reliable 700
Waterflow Pressure Alarm Switch Bailey & Mackey Ltd.
Model 1381V
8.
Fig. 4
9.
Fig. 5
Valve Description
1. Rated working pressure:
Valve & System - 175 psi (12,1 bar)
2. Factory tested to a hydrostatic pressure of 500 psi
(34,5 bar). (Valve only)
3. End and trim connections:
• ANSI/AWWA C606 grooved inlet and outlet
Groove Dimensions
Valve
Size
Outlet
Diameter
Groove
Diameter
Groove
Width
Outlet Face
to Groove
4”
(100mm)
4.500”
(114mm)
4.334”
(110)
3/8”
(10mm)
5/8”
(16mm)
6”
(150mm)
6.625”
(168mm)
6.455”
(164mm)
165mm 6.500”
(165mm)
6.330”
(161mm)
• Threaded openings Per ANSI B 2.1
Valve Size Color
4” (100mm)
6” (150mm) Black
165mm Red
4. Face to face dimensions:
• 4” (100 mm) — 14” (355 mm)
• 6” (150 mm) & 165 mm — 16” (406 mm)
5. Shipping weight:
Valve Size Weight
4” (100 mm)
6” (150 mm) & 165mm
64 lb. (29 kg)
95 lb. (43 kg)
6. Friction loss (Expressed in equivalent length of
Schedule 40 pipe, based on Hazen & Williams
formula with C=120 and a flow velocity of 15ft/sec
(4.6 m/sec)):
Valve Size Equivalent Length
4” (100mm)
6” (150mm) & 165mm
14’ (4.27 m)
29.4’ (9 m)
7. Installation position: Vertical
Maintenance
Reliable Single Interlock Preaction Systems and asso-
ciated equipment shall periodically be given a thorough
inspection and test. NFPA 25, Inspection, Testing and
Maintenance of Water Based Fire Protection Systems,
provides minimum maintenance requirements. System
components shall be tested, operated, cleaned, and in-
spected at least annually, and parts replaced as required.
Resetting the Single Interlock Preaction
System
Refer to Figs. 2, 6, and 7.
1. Close the main valve controlling water supply (Fig. 7) to the
Deluge Valve and close off the air supply to the sprinkler
system at the air supply’s source.
2. Close the pushrod chamber supply valve, valve A (Fig. 7).
3. Open the main drain valve, valve B (Fig. 7), and drain sys-
10.
tem.
4. Open all drain valves and vents at low points throughout
the system, closing them when flow of water has stopped.
Open valve D (Fig. 7). Note: The above steps accomplish
the relieving of pressure in the pushrod chamber of the Del-
uge Valve.
5. With Valve F (Fig. 7) open, push in the plunger of ball drip
valve, valve G (Fig. 7), to force the ball from its seat, and
drain any water in the alarm line.
6. With the Model B Manual Emergency Station, valve D
(Fig. 7), open, push in and rotate the deluge valve’s exter-
nal reset knob (#38, Fig. 6) clockwise until you hear a dis-
tinct clicking noise, indicating that the clapper has closed.
Note: The reset knob can be rotated only after pressure in
the pushrod chamber has been reduced to atmospheric
conditions (0 psig).
7. Inspect and replace any portion of the sprinkler system
subjected to fire conditions.
8. Close valve F (Fig. 7). Activate a solenoid-release pull sta-
tion (Or other means of electric detection.) to energize the
solenoid valve(s). Silence any alarms or audible tones on
the releasing/control panel. Open valve A (Fig. 7) to begin
pressurizing the push-rod chamber and its associated pip-
ing, while simultaneously venting any entrapped air. Note:
This venting of the air from the actuation piping is very im-
portant to ensure proper system operation and avoidance
of falsely tripping the Deluge Valve.
9. Upon seeing a solid flow of water from the drain tubing, and
the cessation of the “gurgling” sound at the drip cup, H (Fig.
7), close valve D (Fig. 7) then rapidly apply compressed air
or nitrogen into the to chamber of the Model LP Dry Valve
Actuator until the pressure conforms to Table A levels as in-
dicated on the air pressure gauge. The Model LP Dry Valve
Actuator will close during this pressurizing process and the
water will stop flowing into the drip cup. At this point, the
pressure gauge which indicates push-rod chamber pres-
sure (Fig. 7) will equalize to the available water supply pres-
sure. Note: It may be necessary to isolate the various pres-
sure gauges in the trim during system set-up by closing the
¼” 3-way valves (#68 Fig. 2) that they are connected to.
During set-up, pressure fluctuations may occur that can be
potentially damaging to the gauges.
10. De-energize the solenoid valve(s). This is accomplished
by resetting the solenoid-release pull station and/or the de-
tectors that were activated in Step #8 above. Note: All de-
tection devices must be reset before the releasing/control
panel can be reset.
11. Open valve F (Fig. 7). Open slightly the main valve control-
ling water supply (Fig. 7) to the deluge valve, closing drain
valve B (Fig. 7) when water flows. Observe if water leaks
through the ball drip valve, valve G (Fig. 7), into the drip
cup, H (Fig. 7). If no leak occurs, the seluge valve’s clapper
is sealed. Open slowly, and verify that the main valve con-
trolling water supply is fully opened and properly monitored.
12. Verify that valve A (Fig. 7) and valve F (Fig. 7) are open.
13. Secure the handle of the Model B Manual Emergency Sta-
tion, valve D (Fig. 7), in the OFF position with a nylon tie
(#64, Fig. 2).
11.
Inspection and Testing
Refer to Figs. 2, 6, and 7.
1. Water supply — be sure the valve(s) controlling water
supply to the Deluge Valve are opened fully and properly
monitored.
2. Alarm line — be sure that valve F (Fig. 7) is opened and
remains in this position.
3. Other trimming valves — check that valve A (Fig. 7) is
open as well as all of the pressure gauge’s ¼” 3-way valves.
Valves C, D, and E (Fig. 7) should be closed.
4. Ball drip valve, valve G (Fig. 7) — make sure that valve F
(Fig. 7) is open. Push in on the plunger to be sure the ball
check is off its seat. If no water appears, the deluge valve’s
water seat is tight. Inspect the bleed hole (see Fig. 7) on
the underside of the deluge valve’s push rod chamber for
leakage.
5. System pneumatic pressure — check the Model LP Dry
Valve Actuator’s air pressure gauge (Fig. 7) and water sup-
ply pressure gauge (Fig. 7) for conformance to Table A.
6. Releasing device — Model LP Dry Valve Actuator (Fig.
7). Verify that the outlet is not leaking water. Check the
Model LP Dry Valve Actuator’s air pressure gauge (Fig. 7)
for proper pressure settings. Verify that the tubing line from
the actuator is not pinched or crushed, which could prevent
proper operation of the deluge valve.
7. Testing alarms — make sure that valve F (Fig. 7) is open.
Open valve C (Fig. 7) permitting water from the supply to
flow to alarm portion of the trim. Typical devices that are
connected to this section of the trim are pressure switches
and/or a mechanical sprinkler alarms (water motor). After
testing has been completed, close this valve securely. Push
in on the plunger of ball drip valve G (Fig. 7) until all of the
water has drained from the alarm line.
8. Operational test — Open the Model B Manual Emer-
gency Station, valve D (Fig. 7). Note: An operational test
will cause the deluge valve to openand flow water into the
sprinkler system.
9. Secure the Model B Manual Emergency Station, valve D
(Fig. 7), in the OFF position with a nylon tie (#64, Fig. 2) after
the deluge valve is reset.
Testing the Model DDX Deluge Valve without
Flowing Water
Refer to Fig. 7
1. Close the valve controlling water supply to deluge valve
and open the main drain valve B.
2. Verify that valve A is open, allowing water to enter the push
rod chamber.
3. Operate detection system – energize the solenoid valve(s)
by operating a detector or manual pull station.
4. Operation of the detection system will result in a sudden
drop of water pressure in the push rod chamber.
5. Reset the detection system — reverse the operations per-
formed in step three above and then proceed according
to the directions listed in the “Resetting the Single Interlock
Preaction System” section of this bulletin for resetting the
Deluge Valve.
Draining Excess/Condensate Water from the
System
Refer to Fig. 7
1. Close the main valve controlling water supply to deluge
valve. Also, close valve A and open the main drain valve B.
2. Open the condensate drain valve E until all of the water has
drained. Close valve E. Note: Be sure not to keep valve E
open for an extended period of time because that will cause
enough system air to bleed off, thereby causing an undesir-
able activation of a trouble/alarm-annunciating device.
3. Close the main drain valve B. If system contains
pressurized air, allow the air pressure to come back
up to specification. Open valve A first, and then
open the main valve controlling the water supply to
the deluge valve.
Maintenance Procedures - Model DDX Del-
uge Valve
Refer to Figs. 2, 6 & 7.
1. Mechanical sprinkler alarm (water motor–not shown)
not operating:
This is most likely caused by a clogged screen in the strain-
er of the water motor. Proceed as follows: Remove plug
from the strainer. Remove and clean the screen. Replace
the screen and the plug, and then tighten securely (Ref.
Bulletin 613).
2. Leakage out of the ball drip valve G (Fig. 7).
a. Water leakage due to a water column above
the deluge valve’s clapper:
This condition can be caused by leakage past the
system side of the Model DDX Deluge Valve’s seal
faceplate subassembly (#5, Fig. 6). Be sure that this
surface is free of any type of debris. To eliminate leak-
age due to a water column, refer to the section in this
bulletin marked “Draining Excess/Condensate Water
From System”. If the problem continues proceed to
the following section.
b. Leakage, air or water from the ball drip valve,
G (Fig. 7):
If system air is leaking out the ball drip valve, the prob-
lem is either damage to the airside of the Model DDX
Deluge Valve’s seal faceplate subassembly (#5, Fig.
6), seat (#2, Fig. 6), or the upper seat O-ring (#11,
Fig. 6).
If supply water is leaking out the ball drip valve, the
problem could be caused by damage to the Model
DDX Deluge Valve’s seal faceplate subassembly (#5,
Fig. 6), seat (#2, Fig. 6), or lower seat O-ring (#11, Fig.
6). The following section provides instructions to cor-
rect both conditions:
A) Shut down the valve controlling the water
supply to the Deluge Valve and open the
main drain valve B (Fig. 7). Open the water
column drain valve E (Fig. 7). Close the push
rod chamber supply valve A (Fig. 7) and
open the Model B Manual Emergency Sta-
tion D (Fig. 7).
12.
Fig. 6
Item.
No
Part Number
Description No
Req’d
4”(100mm)
Valve
6”(150mm)
Valve
165mm
Valve
191006005 91006007 91006027 Valve Body 1
296016004 96016006 96016006 Seat 1
391916004 91916006 91916006 Clapper 1
492116064 92116066 92116065 Cover 1
593416004 93416006 93416006 Seal Faceplate
Subassembly 1
693706004 93706006 93706006 Gasket, Cover
(Not Shown) 1
794506004 94506006 94506006 Lever 1
892126066 Cover, Pushrod 1
995406407 O-ring (014) 1
10 95406007 O-ring (114) 1
11 95406006 N/A O-ring (156) 2
N/A 95406016 O-ring (161)
12 95406024 O-ring (912) 2
13 93706001 N/A N/A Gasket, Clapper, 4” 1
N/A 93706002 93706002 Gasket, Clapper, 6” 1
14 96216086 Hinge Pin, Clapper 1
15 96216046 Pin, Lever 1
16 95606131 Threaded Stud,
#10-32 x ¾” 1
17 96216066 Pin, Locking, Seat
(Not Shown) 2
18 95106006 Piston 1
19 95200038 Plug, Socket, Ø 3/8”-18 NPT
(Not Shown) 2
20 95506006 Pushrod 1
21 93916006 Pushrod Guide 1
22 95306267 Ring, Retaining
(2 Assembled to Item No.14) 3
23 95606128 Screw, Button Head,
#10-32 x 3/8” 1
Item.
No
Part Number
Description No
Req’d
4”(100mm)
Valve
6”(150mm)
Valve
165mm
Valve
24 95606129 Screw, Hex Washer Head,
#10-32 x 3/8” 4
25 95606107 N/A N/A Screw, Hex Cap,
Ø ½”-13 x 1½” 6
25 N/A 91106006 91106006 Screw, Hex Cap,
Ø 5/8”-11 x 1 ¾” 1
26 96906111 Spring Lock Washer, #10 1
27 95606127 Screw, C’sunk Cap Head,
Ø 3/8”-16 x ¾” 1
28 95606130 Screw, Socket Head,
#10-32 x 1” 1
29 95606114 Screw, Socket Head,
Ø ¼”-20 x 5/8” 6
30 93916066 Shaft, Reset 1
31 96406004 Spring, Lever 1
32 96406906 Spring 2
33 96906904 Teflon Washer, Ø ½”
(2 Assembled to Item No.14) 3
34 95276006 Diaphragm 1
35 92306006 Disc, Bumper 1
36 94106066 Housing, Reset 1
37 94206406 Inlet, Orifice 1
38 94356006 Knob, Reset 1
39 85000050 O-ring Grease, DuPont™
Krytox® GPL-201 A/R
Models DDX 4” (100mm), 6” (150mm) & 165mm Deluge Valve Parts List
13.
Fig. 7
14.
B) Remove the deluge valve’s front (handhold)
cover (#4, Fig. 6) and inspect the seat (#2,
Fig. 6), clapper (#3, Fig. 6), and seal face-
plate subassembly (#5, Fig. 6) for damage.
If inspection indicates damage to the clapper (#3,
Fig. 6) or seal faceplate subassembly (#5, Fig. 6) only,
then the clapper subassembly can be removed as
follows:
At the rear of the deluge valve, disconnect the water
column drain trim section at the ¾” union (#68, Fig.
2). Remove the retaining ring (handhold cover side)
from the clapper hinge pin (#14, Fig. 6) and push this
pin through the water column drain line and remove
the clapper subassembly. Remove the four retaining
screws (#24, Fig. 6) holding the seal faceplate subas-
sembly (#5, Fig. 6). Inspect the clapper (#3, Fig. 6)
visually before re-installing. Apply a small amount of
silicone-based lubricant to the four retaining screws.
Install a new seal faceplate subassembly. Torque the
retaining screws to approximately 40 inch-pounds
and reassemble.
If the seat (#2, Fig. 6) is damaged or it is suspected
that the leakage is through the lower O-ring (#11, Fig.
6), the seat-clapper subassembly is easily removed
as a unit as follows:
Using a 5/16” Allen wrench, remove the two 3/8” NPT
pipe plugs (#19 (not shown) Fig. 6) located on the
side of the Model DDX Deluge Valve. The seat-clap-
per subassembly is retained by two locking pins (#17
(not shown) Fig. 6). The centers of these pins have a
¼”-20 threaded hole. Remove the two locking pins by
engaging them with a ¼”-20 screw or threaded rod
and pulling them out. Note: The two locking pins
are not threaded, so turning them with the attached
¼”-20 screw or threaded rod is not recommended.
A proven method is to use ¼”-20 threaded rod with
a locknut on the un-inserted end. Grab hold of the
locknut with pliers or vice-grips and tap the pliers or
vice-grips in the direction moving away from the del-
uge valve. Doing so should pull the locking pins out
of the deluge valve. With the clapper (#2, Fig. 6) in
the closed position (not latched), dislodge the seat-
clapper subassembly from the deluge valve’s body
by inserting two large flathead screw drivers under
the lever and clapper mounting ears of the seat and
pry up until the seat-clapper subassembly is free of
its bore. Reach into the deluge valve and grasp the
seat-clapper subassembly from the sides. Lift up
and rotate the seat-clapper subassembly through
90 degrees about the main access of deluge valve
so that the lever-side of the seat-clapper subassem-
bly faces the outlet of the deluge valve. Rotate the
seat-clapper subassembly around the centerline of
the deluge valve until the top of the clapper faces the
handhold opening and then pull it out clapper hinge-
pin side first. Visually examine all of the components
of the seat-clapper subassembly, replacing any com-
ponent that appears damaged. New O-rings (#11,
Fig. 6) should always be used for reassembly.
Re-assembly:
It is likely that the lower seat O-ring (#11, Fig. 6) has
remained at the bottom of the deluge valve body’s
bore. Discard this O-ring and clean the bore. Lubri-
cate the bore with O-ring grease and place the lower
seat O-ring on the step at the bottom of the bore, veri-
fying that it is in full contact with the bore. Lubricate
the bottom step and upper seat O-ring (#11, Fig. 6) of
the refurbished seat-clapper subassembly. Insert the
seat-clapper subassembly into the handhold open-
ing of the deluge valve lever-first, rotating it until the
lever side faces the outlet of the deluge valve. Rotate
the seat-clapper subassembly until the lever (#7, Fig.
6) faces the push rod (#20, Fig. 6), then drop the seat-
clapper subassembly into the deluge valve’s bore.
Verify that the seat-clapper subassembly is fully de-
pressed in to the deluge valve’s body. Check to see
that the lever lines up with the push rod. Adjust if nec-
essary. Clean and lubricate the two locking pins (#17
(not shown) Fig. 6) with O-ring lubricant and drive
them into the deluge valve body. Reinstall the 3/8”
NPT pipe plugs (#19 (not shown) Fig. 6). Reassemble
the handhold cover and set up the Model DDX Del-
uge Valve as per the section of this bulletin entitled
“Resetting the Single Interlock Preaction System”.
3. Leakage out of the push rod chamber vent hole:
A small bleed hole is located on the underside of the push
rod chamber (see Fig. 6). If there is air or water leakage
coming out of this hole, do the following:
A) Shut down the valve controlling water supply to the del-
uge valve. Relieve the inlet pressure by opening the
main drain valve B (Fig. V). Close valve A (Fig. 7), the
valve that supplies water to the push rod chamber, and
open the Model B Manual Emergency Station, valve D
(Fig. 7).
B) Remove the trim at the unions nearest to the push rod
chamber cover (#8, Fig. 6).
C) Take the push rod chamber cover (#8, Fig. 6) off by
removing the six retaining screws (#29, Fig. 6).
Condition #1: Water coming out of the bleed hole:
Water coming out of the bleed hole is caused by a leak-
ing diaphragm (#34, Fig. 6). Visually inspect the push rod
chamber cover (#8, Fig. 6) and piston (#18, Fig. 6) to deter-
mine what could have damaged the diaphragm and cor-
rect. Install a new diaphragm. NOTE: The diaphragm has
two different surfaces, it is not bi-directional. It will fail if in-
stalled backwards! Roll the diaphragm so that the smooth
surface (the pressure side) conforms to the inside of the
push rod chamber cover and re-assemble the six retaining
screws (#29, Fig. 6) with an installation torque of 15 foot-
pounds. Set up the Model DDX Deluge Valve as per the
section of this bulletin entitled “Resetting the Single Interlock
Preaction System”.
Condition #2: System Air coming out of the bleed hole:
System air coming out of the bleed hole is caused by a de-
fective O-ring assembled to the push rod guide (#21, Fig.
15.
6). Remove the piston-push rod subassembly, push rod
spring (#32, Fig. 6), and push rod guide (#21, Fig. 6). Verify
by hand turning, that the push rod cannot be unscrewed
from the piston. Replace all of the O-rings and the push rod
guide. The correct installation torque for the push rod guide
is 35 inch-pounds. CAUTION: Do not over-tighten the push
rod guide. Re assemble the components that were initially
removed. Re-install the diaphragm (#34, Fig. 6) if it appears
to be in good shape, otherwise, replace it also. NOTE: The
diaphragm has two different surfaces, it is not bi-directional.
It will fail if installed backwards! Roll the diaphragm so that
the smooth surface (the pressure side) conforms to the in-
side of the push rod chamber cover and re-assemble the
six retaining screws (#29, Fig. 6) with an installation torque
of 15 foot-pounds. Set up the Model DDX Deluge Valve as
per the section of this bulletin entitled “Resetting the Single
Interlock Preaction System”.
Model LP Dry Valve Actuator Parts List
P/N 71030010
Refer to Fig. 8
Item
No. Part No. Description Qty.
Required
1 94106936 Lower Housing 1
2 94106935 Upper Housing 1
3 96006905 Seat 1
4 92206312 Diaphragm 1
5 95106911 Facing Plate Assembly 1
6 96906311 Diaphragm Washer 1
7 94906406 Facing Plate Nut 1
8 95406901 Seat O-Ring 1
9 95606305 Bolt 6
10 96406902 Compression Spring 1
Maintenance – Model LP Dry Valve Actuator
Refer to Figs. 7 and 8
1. If water constantly flows through the Model LP Dry Valve
Actuator and into the drain, there is a leak in the seal of the
Actuator’s seat.
2. Close the main valve controlling water supply (Fig. 7) to the
Deluge Valve and close off the air/nitrogen supply to the
sprinkler system. Close valve A (Fig. 7).
3. Drop pressure in the system by opening the ¼” angle valve,
valve E (Fig. 7), and remove the Actuator from the system.
4. Remove all six bolts (#9, Fig. 8) holding the Actuator togeth-
er. Clean or replace the facing plate assembly (#5, Fig. 8)
and seat (#3, Fig. 8).
Fig. 8
16.
5. Reassemble the Actuator, using a torque of 8 ft-lbs on the
facing plate nut (#7, Fig. 8) and 12 ft-lbs on the six bolts
(#9, Fig. 8). Use a cross-tightening pattern. Reinstall the
Actuator. Set up the Model DDX Deluge Valve as per the
section of this bulletin entitle “Resetting the Single Interlock
Preaction System.”
Ordering Information
Specify
• Valve Model & Size — 4”(100mm) Model DDX Deluge
Valve (P/N 6103040026), 6”(150mm) Model DDX Del-
uge Valve (P/N 6103060024), 165mm Model DDX Del-
uge Valve (P/N 6103060028).
• Trim — The trim set is available in individual parts, in
time-saving segmentally assembled kit forms, or fully
assembled to the Model DDX Deluge Valve.
Trim Configurations Trim Part Numbers
Trim Configurations 4” (100mm) Valve 6” (150mm) Valve 165mm Valve
Fully Assembled to Model DDX Valve 6505040400 6505060400 6505065400
Segmentally Assembled
(Model DDX Valve Sold Separately) 6502071710
Individual Parts
(Model DDX Valve Sold Separately) 6502071700
Note: For metric installations, a 2” NPT x R2, ISO 7/1 x Close Nipple
(Reliable P/N 98543401) is sold separately as an adapter for the
single drain outlet of the trims.
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 OF SERVICE MAY ELIMINATE THE FIRE PROTECTION OF THAT SYSTEM.
PRIOR TO PROCEEDING, NOTIFY ALL AUTHORITIES HAVING JURISDICTION. CONSIDERATION SHOULD BE
GIVEN TO EMPLOYMENT OF A FIRE PATROL IN THE AFFECTED AREA.
WARNING: PRIOR TO OPERATING THE SOLENOID VALVE, BE SURE TO CLOSE THE SYSTEM CONTROL VALVE
TO AVOID UNINTENTIONAL OPERATION OF THE DELUGE VALVE
1. Inspections: It is imperative that the system be inspected and tested in accordance with NFPA 25 on a regular basis. The fre-
quency of the inspections may vary due to contaminated water supplies, corrosive water supplies, or corrosive atmospheres.
In addition, the alarm devices, detection systems, or other connected trim may require a more frequent schedule. Refer to the
system description and applicable codes for minimum requirements.
2. The valve must be inspected at least monthly for cracks, corrosion, leakage, etc., cleaned and replaced as necessary.
3. If leakage is suspected through the solenoid valve, it should be replaced.
17.
Fig. 9
Installation Dimensions in Inches (mm)
VALVE A B C D E F G H J K *L M N P Q R S
4”
(100mm)
5¼
(133)
63/4
(171)
13¼
(337)
77
/
8
(200)
25¾
(654)
5½
(140)
8½
(216)
13½
(343)
6¼
(159)
51/2
(140)
14
(356)
131/2
(343)
49¼
(1251)
23
(584)
33¾
(857)
36
(914)
10¾
(273)
6”
(150mm)
& 165mm
6¼
(159)
73/4
(197)
13¼
(337)
77
/
8
(200)
26¾
(679)
5½
(140)
8½
(216)
14½
(368)
8¾
(222)
3¼
(83)
16
(406)
131/2
(343)
51¼
(1302)
25
(635)
35¾
(908)
38
(965)
10¾
(273)
* Total take out dimension for Fully Assembled to DDX Valve w/Control Valve Configurations:
4” - 207/16, 6” - 233/4””, 165 mm - N/A.
Reliable Automatic Sprinkler Co., Inc.
(800) 431-1588 Sales Offices
(800) 848-6051 Sales Fax
(914) 829-2042 Corporate Offices
www.reliablesprinkler.com Internet Address
Manufactured by Reliable Fire Sprinkler Ltd.
Unit A2, Epsom Business Park
Kiln Lane, Epsom
Surrey, KT171JF
England
Phone: 0372 728899
Fax: 1372 724461
P/N 9999970344
11/17
The equipment presented in this bulletin is to be installed in accordance with the latest pertinent Standards of the National Fire
Protection Association, Factory Mutual Research Corporation, or other similar organizations and also with the provisions of
governmental codes or ordinances whenever applicable.
