8.
Standard Solenoid Valve Specications:
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 Specications:
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
Single Interlock Preaction Systems Engineering
Specication
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 Single 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] hydraulically operated, dif-
ferential latching clapper type valve. Deluge valve construction
shall be of lightweight, ductile iron construction with a screw in
stainless steel seat. 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. Deluge 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 constructed
of a synthetic engineering plastic to resist corrosion. Casting
shall have a bleeder hole located on the pushrod 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 orice
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), 76mm, 3” (80mm) and 8” (200mm) valve sizes and
300 psi (20.7 bar) for 4” (100mm), 165mm and 6” (150mm)
valve sizes and shall be factory hydrostatic tested at 500 psi
(34.5 bar) for 2” (50mm), 2½” (65mm), 76mm, 3” (80mm) and
8” (200mm) valve sizes and 600 psi (41.4 bar) for 4” (100mm),
165mm and 6” (150mm) 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).
Hydraulic trim to be either black pipe or galvanized pipe and
brass components specically listed/approved with the deluge
valve.
Electric Actuation Single Interlock Preaction Trim shall include
an electrical two-way, normally closed, pilot operated sole-
noid valve releasing device [cULus Listed] [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 connections. Solenoid
valve shall have a maximum working pressure of [175 psi (12.1
bar)] [300 psi (20.7 bar)] and maximum ambient temperature
rating of 150°F (66°C). Power consumption of integrated coil
shall be limited to [10 watts (175 psi (12.1 bar)) Rated][22
watts (300 psi (20.7 bar)) Rated] and require 24 VDC from a
releasing/control panel listed for such service. Solenoid valve
shall be a Skinner ½” normally-closed solenoid valve, [Model
73218BN4UNLVNOC111C2 (175 psi (12.1 bar)) Rated].
[Model 73212BN4TNLVNOC322C2 (300 PSI (20.7 bar)) Rat-
ed].
Dry Pilot Line Single Interlock Preaction Trim shall include a
low pressure pneumatic actuator which is constructed of cast
iron utilizing a diaphragm and compression spring design to
separate the pushrod chamber water pressure from the system
piping’s pneumatic supervisory air pressure. The low-pressure
actuator shall only require between 8 and 28 psi (0.6 and 1.9
bar) supervisory air pressure for proper setting in accordance
with the manufacturers instructions. The Low-pressure actua-
tor shall be Reliable Model LP Dry Pilot Line Actuator. The Dry
Pilot Line Single Interlock Trim shall also include a low air pres-
sure switch to indicate loss of air pressure in the system piping.
The switch shall be [UL Listed/ FM Approved][cULus Listed]
and of the bellows-activated type enclosed in a weatherproof
NEMA 4X/ NEMA 4 rated enclosure incorporating tamper resis-
tant screws. There shall be two sets of SPDT (form C) contacts
rated 10.0 A @ 125/250 VAC and 2.5 A @ 6/12/24 VDC. The
pressure switch shall have a maximum service pressure rating
of 250 psi (17.2 bar). Switch shall be provided with a ½” NPT
male pressure connection. Low air supervisory switch shall be
Potter PS25-2.
Basic trim shall include a pressure alarm switch to indicate
water flow in system. Pressure switch shall be [cULus Listed]
[FM Approved] and of the bellows activated type enclosed in a
weatherproof NEMA 4/4X rated enclosure incorporating tam-
per proof screws. There shall be two sets of SPDT (form C)
contacts rated 10.0 A @ 125/250 CAV and 2.5 A @ 6/12/24
VDC. The pressure switch shall have a maximum service pres-
sure rating of 250 psi (17,2 bar) and shall be factory adjusted to
operate at a pressure of 4 to 8 psi (0,27 to 0,55 bar) with adjust-
ment up to the 15 psi (1,03 bar). Switch shall be provided with
a 1/2” NPT male pressure connection. Pressure alarm switch
shall be Potter PS10-2.
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