MARCH, 2022
HD 235
PAGE 1 OF 16
HD FIRE PROTECT
PVT. LTD.
DELUGE VALVE
MODEL-H3
(DUCTILE IRON)
TECHNICAL DATA
MODEL
H3-Ductile Iron ASTM A
536-77 GRADE 65-45-12
NOMINAL SIZE
200, 150, 100, 80 & 50NB
SERVICE PRESSURE 1.4 to 17.6 kg/sq.cm
(20 to 250 psi)
END CONNECTION
Flange X Flange
Groove X Groove
THREADED OPENING BSPT
MOUNTING
Vertical or Horizontal
FACTORY
35 kg/sq.cm (500 psi)
HYDROSTATIC
TEST PRESSURE
FLANGE
ANSI B 16.5 #150 FF
CONNECTION
is standard supply.
(Contact HD Sales for other
options)
WET PILOT
As per graph in the
SPRINKLER catalogue
HEIGHT LIMITATION
NET WEIGHT
FXF GXG
WITHOUT TRIM
200 NB - 153 kg 143 kg
150 NB - 79 kg 68 kg
100 NB - 50 kg 42 kg
80 NB - 35 kg 29 kg
50 NB - 32 kg 27 kg
FINISH
Red to RAL 3001
APPROVAL UL Listed
ORDERING
1. Size of valve
INFORMATION
2. Flange specification or for
Grooved end specify pipe
outside diameter
3. Valve mounting- Horizontal
or Vertical
4. Trim type
GROOVE PIPE SIZE:
NOMINAL SIZE
Pipe OD in mm
2” (50 NB)
60.3
3” (80 NB)
89.0
4” (100 NB)
114.3
6” (150 NB)
165.1
6” (150 NB)
168.3
8” (200 NB)
219.1
NOTE: FOR 6”(150 NB) STANDARD SUPPLY IS 168.3 mm OD
GROOVE PIPE.
FOR 165.1mm REQUIREMENT, SPECIFY IN ORDER
DESCRIPTION
Deluge Valve is known as a system control valve in
a deluge system, used for fast application of water
in a spray system. Deluge valve protects areas such
as power transformer installation, storage tank,
conveyor protection and other industrial application
etc. With the addition of foaming agent, deluge valve
can be used to protect aircraft hanger and inflammable
liquid fire.
VALVE OPERATION
HD Deluge Valve is a quick release, hydraulically
operated diaphragm valve. It has three chambers,
isolated from each other by the diaphragm operated
clapper and seat seal. While in SET position, water
pressure is transmitted through an external bypass
check valve and restriction orifice from the system
supply side to the top chamber, so that supply
pressure in the top chamber act across the diaphragm
operated clapper which holds the seat against the
inlet supply pressure, because of the differential
pressure design. On detection of fire, the top chamber
is vented to atmosphere through the outlet port via
opened actuation devices. The top chamber pressure
cannot be replenished through the restricted inlet
port, and the upward force of the supply pressure
lifts the clapper allowing the water flow to the system
piping network and alarm devices.
