DELUGE VALVE MODEL A CAST IRON
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.
Deluge valve is a quick release, hydraulically operated diaphragm valve. It has three chambers, isolated 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 the system supply side to the top chamber, so that supply pressure in the top chamber acts across the diaphragm operated clapper which holds the seat against the inlet supply pressure because of differential pressure design.
On detection of fire the top chamber is vented to atmosphere through the outlet port via opened actuation device(s). The top chamber pressure cannot be replenished through the restricted inlet port, thus it reaches less than half the supply pressure instantaneously and the upward force of the supply pressure lifts the clapper allowing water to enter the system piping network and alarm devices.
NOMINAL SIZE 200, 150, 100, 80 & 50NB
MAXIMUM SERVICE 12 Bar (175 PSI)
THREADED OPENING BSPT
MOUNTING 90° pattern inlet to outlet
FACTORY 25 Kg./sq.cm. (350 PSI)
FLANGE ANSI B 16.1 FF # 125
CONNECTION (Flange drilling matching
to ANSI B 16.5 # 150)
TRIM Galvanized Steel with Brass
WET PILOT As per graph in the catalogue
NET WEIGHT 200NB - 214 Kg
WITHOUT TRIM 150NB - 131 Kg
100NB - 77 Kg
80NB - 50 Kg
50NB - 47 Kg
FINISH Red RAL 3000
APPROVAL UL Listed
INFORMATION 1) Size of valve
2) Trim type -
Test & Alarm