6.
System Electrical Requirements
All releasing and detection devices in Reliable’s Model
DDX Type D Double Interlock Preaction System may be
operated and supervised by the PFC-4410-RC Releasing
Control Panel. An emergency manual pull station should
be provided near the sprinkler riser to facilitate setup of the
system.
The power supply, the standby emergency power supply,
battery charger, and the rectifier circuitry are all contained
within the Potter PFC-4410-RC Releasing Control Panel.
Batteries that provide ninety hours of standby power are re-
quired for Factory Mutual Approved systems.
The Potter PFC-4410-RC Releasing Control Panel can
utilize either 120VAC or 220VAC.
Note:
In order for the solenoid valve to maintain a warranty it must
remain sealed as it came from the factory. If there are concerns
about the valve’s internal components, immediate replacement
is recommended.
Standard Solenoid Valve Specifications:
Skinner Model 73218BN4UNLVN0C111C2
Rated working pressure: 175 psi (12.1 bar)
Voltage: 24 VDC
Power: 10 Watts
Current: 0.41 Amps Holding
Enclosure Coil: NEMA 4X
Pipe Size: ½” NPT Female
Cv Factor: 4.0
Alternate Solenoid Valve Specifications:
Skinner Model 73212BN4TNLVN0C322C2
Rated working pressure: 300 psi (20.7 bar)
Voltage: 24 VDC
Power: 22 Watts
Current: 0.83 Amps Holding
Enclosure Coil: NEMA 4X
Pipe Size: ½” NPT Female
Cv Factor: 2.8
Type D Double Interlock Preaction Systems
Engineering Specification
2” (50 mm), 2½” (65 mm), 76 mm, 3” (80 mm), 4” (100
mm), 165 mm, 6” (150 mm) and 8” (200 mm)
Model DDX Deluge Valve
Preaction System shall be a Double Interlock Preaction
System utilizing a [2” (50 mm)][2½” (65 mm)][76 mm] [3”
(80 mm)][4” (100 mm)][165 mm][6” (150 mm][8” (200
mm)] [cULus Listed] [Factory Mutual Approved] Reliable
Model DDX Deluge Valve. Deluge valve shall be a [2” (50
mm)][2½” (65 mm)][76 mm] [3” (80 mm)][4” (100 mm)]
[165 mm][6” (150 mm][8” (200 mm)] [cULus Listed] [Fac-
tory Mutual Approved] hydraulically operated, differential
latching-clapper type valve. Deluge Valve construction
shall be of lightweight, ductile iron construction with either
a “screw in” stainless steel seat and clapper assembly or
drop in bronze seat and clapper assembly. Stainless steel
or Bronze seat shall have O-ring seals to resist leakage
and corrosion. Clapper facing shall be pressure actuated,
providing a limited compression seat for the sealing force
between the clapper rubber facing and the valve 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 located on the push-
rod chamber for air/water leakage indication. Trip ratio shall
be approximately a 3:1 force differential. Deluge valve shall
be of the straight through design to minimize friction loss.
Inlet restriction orifice shall be factory installed into the inlet
port of the deluge valve pushrod cover plate and not be a
separate part of the deluge valve trim. End connection style
to be [2” (50 mm)][2½” (65 mm)][76 mm] [3” (80 mm)][4”
(100 mm)][165 mm][6” (150 mm)][8” (200mm)] grooved,
per ANSI/AWWA C606 or flanged per ASME B16.5 or ISO
7005. Deluge valve shall have a rated working pressure of
250 psi (17.2 bar) for 2” (50mm), 2½” (65mm), 3” (80mm),
76mm and 8” (200mm) valve sizes and 300 psi (20.7 bar)
for 4” (100mm), 6” (150mm) and 165mm valve sizes and
shall be factory hydrostatic tested at 500 psi (34.5 bar)
for 2” (50mm), 2½” (65mm), 3” (80mm), 76mm and 8”
(200mm) valve sizes and 600 psi (41.4 bar) for 4” (100mm),
6” (150mm) and 165mm valve sizes.
Deluge valve to be [2” (50 mm)][2½” (65 mm)][76 mm]
[3” (80 mm)][4” (100 mm)][165 mm][6” (150 mm)][8” (200
mm)] Reliable Model DDX Deluge Valve (Bulletin 519).
Valve trim shall be Type D electric/electric release trim
consisting of the following components:
•
Hydraulic trim to be galvanized and brass components.
All trims and components to be listed/Approved with the
Deluge Valve, including associated pressure gauges,
1¼” or 2” drain connection, alarm devices, alarm test
and pushrod chamber connections.
•
Electrical two-way, normally closed, pilot operated so-
lenoid valve [cULus] [FM Approved] for its intended
use. The solenoid valve shall be constructed of a brass
body with stainless steel sleeve tube, springs, stop
and plunger, and with ½” female NPT end connec-
tions. Solenoid valve shall have a maximum working
pressure of [175 psi (12.1 bar)] [300 psi (20.7 bar)]
and a maximum ambient temperature rating of 150ºF
(66ºC). Power consumption of the integrated coil shall
be limited to [10 watts for the 175 psi (12.1 bar) rated]
[22 watts for the 300 psi (20.7 bar) rated] and require
24 VDC from a releasing Control Panel listed for such
service. Solenoid shall be a Skinner ½” normally closed
solenoid valve [73218BN4UNLVNOC111C2 (175 psi
(12.1 bar) rated)] [73212BN4TNLVNOC322C2 (300
psi (20.7 bar) rated)].
Summary of Contents for DDX
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