Specifications
22.
loss. Inlet restriction orifice shall be factory installed into the
inlet port of the deluge valve push-rod 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).
Interlock Preaction Trims shall consist of either black pipe
or galvanized pipe and brass components specifically list-
ed/approved with the deluge valve.
In addition, the Electric Actuation Single Interlock Preac-
tion Trim shall include a Deluge valve releasing device to
be an electrical two-way, normally closed, pilot operated so-
lenoid valve [cULus Listed] [FMApproved] 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 tempera-
ture 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. Sole-
noid 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)) Rated].
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 de-
sign 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 actuator shall be Reliable Model LP Dry
Pilot Line Actuator. The Dry Pilot Line Single Interlock Trim
shall also include a low air pressure 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 resistant 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 (17,2bar). Switch shall be provided with a ½” NPT male
pressure connection. Low air supervisory switch shall be
System Sensor EPS40-2.
Pneumatic Supervisory Pressure Supply Options
Owner’s Air supply
Supervisory air supply shall be provided by an owner sup-
plied air system in conjunction with a [cULus Listed] auto-
matic pressure maintenance device, capable of maintaining
a constant system pressure regardless of pressure fluctua-
tions in the compressed air source. The pressure mainte-
nance device shall consist of galvanized trim and brass
parts, including a strainer and a field adjustable air pres-
sure regulator, and have a working pressure rating of 175 psi
(12,1 bar). The pressure regulator shall have an adjustable
outlet pressure range of 5 to 100 psi (0,34 to 6,8 bar). Pres-
sure maintenance device shall be Reliable Model A-2 (see
NFPA13).
Low Pressure Air Compressor Panel
Wet Pilot Line Single Interlock Preaction and Electric Actu-
ation Single Interlock Preaction system supervisory air sup-
ply shall be a [cULus Listed] [FM Approved] self-contained,
low pressure air compressor panel containing a 1/16 hp air
compressor, DPDT relay for remote supervisory annuncia-
tion, low pressure warning light, pressure gauge, and low
pressure alarm switch. Pressure switch shall control the
compressor, providing a maximum operating supervisory
pressure of approximately 7 psi (0,5 bar), and a low-pressure
supervisory alarm at approximately 4 psi (0,3 bar). Power re-
quirements shall be 120 VAC/60 Hz or 220/230 VAC/50 HZ.
Low Pressure Air Compressor Panel shall be Reliable Model
B-SI or C-SI.
Compressed Air Supply
Supervisory air supply shall be provided by an automatic
air compressor sized for the capacity (volume) of the single
interlock preaction system piping, and be capable of restor-
ing normal air pressure in the system within the time limits
specified in NFPA 13.
Dry Pilot Line Single Interlock Preaction systems desir-
ing a higher supervisory air pressure, shall only require
between 8 and 28 psi (0,6 to 1,9 bar) supervisory pressure
for proper setting of the low pressure pneumatic actuator in
accordance with the manufacturer’s instructions. Air supply
shall be equipped with an automatic pressure maintenance
device capable of maintaining a constant system pressure
regardless of pressure fluctuations in the compressed air
(or nitrogen) source, or system piping. The pressure main-
tenance device shall consist of galvanized trim and brass
parts, including a strainer and a field adjustable air pressure
regulator, or pressure switch, and have a working pressure
rating of 175 psi (12,1 bar). The pressure regulator shall have
an adjustable outlet pressure range of 5 to 100 psi (0,34 to
6,8 bar). Pressure maintenance device shall be Reliable
Model A-2 or Reliable Model B-1. (Note: For small systems
with air compressors having a capacity less than 5.5 cfm @
10 psi, a pressure maintenance device is not required per
NFPA 13. Consideration should be given, however, to the
impact of a direct air supply on the overall performance of
the system.)