23
750FG09B
Fig. 9
TO ALARM
PRESSURE SWITCH
TO MECHANICAL
SPRINKLER ALARM
TO
DRIP
CUP
TO DRAIN
PUSH-ROD CHAMBER
PRESSURE GAUGE
TO
SYSTEM
SPRINKLER SYSTEM PRESSURE
GAUGE (AIR OR WATER)
TO
DRIP
CUP
MODEL DDX
DELUGE VALVE
ALARM
TEST
TO NON-SILENCEABLE
ALARM PRESSURE SWITCH
(REF. NFPA 72)
OUT
IN
WATER SUPPLY
PRESSURE GAUGE
WATER SUPPLY CONTROL VALVE
FROM SUPPLY
MODEL A-2 PRESSURE
MAINTENANCE DEVICE
FROM AIR OR
NITROGEN SUPPLY
AIR SUPPLY
PRESSURE GAUGE
LOW AIR PRESSURE
ALARM SWITCH
TO
DRIP
CUP
SUPPLY
NORMALLY CLOSED
SOLENOID VALVE 175 psi
(12.1 bar) OR 300 psi
(20.7 bar) RATED
