TFP1326
Page 3 of 22
Port Port Description
Port Sizes, NPT Inch per ANSI B1.20.1
3
(DN80)
4
(DN100)
6
(DN150)
8
(DN200)
P1 Diaphragm Chamber Supply 1/2 1/2 1/2 1/2
P2 Water Supply Pressure & Alarm Test 1/2 1/2 1/2 1/2
P3 Not Used 3/4 3/4 3/4 3/4
P4 Not Used 1/2 1/2 1/2 1/2
P5 System Drain 3/4 3/4 3/4 3/4
P6 Main Drain 1-1/4 2 2 2
P7 Alarm Actuation 1/2 1/2 1/2 1/2
FIGURE 2A FIGURE 2B
FIGURE 2DFIGURE 2C
WATER SUPPLY SHUT OFF
DRAIN FROM SYSTEM
SET CONDITION
WATER SUPPLY
SYSTEM OPEN TO ATMOSPHERE
SYSTEM
DRAIN
OPEN
MAIN
DRAIN
CLOSED
WATER SUPPLY
PRESSURE &
ALARM TEST
SYSTEM
DRAIN
OPEN
MAIN
DRAIN
OPEN
DIAPHRAGM
CHAMBER
SUPPLY
FROM
UPSTREAM
SIDE OF
SHUT-OFF
VALVE
DIAPHRAGM
CHAMBER
DIAPHRAGM
CHAMBER
OPEN TO
VALVE
WATERWAY
DIAPHRAGM
SEAT
VALVE
WATERWAY
DIAPHRAGM
CHAMBER
SUPPLY
FROM
UPSTREAM
SIDE OF
SHUT-OFF
VALVE
DIAPHRAGM
AUTOMATICALLY
FLEXES TO
ITS SEATED
POSTION
DIAPHRAGM
CHAMBER
OPEN TO
ATMOSPHERE
DIAPHRAGM
RETRACTS
OPENING
VALVE
WATERWAY
VALVE
WATERWAY
DIAPHRAGM
SEAT
VALVE
WATERWAY
OPERATED CONDITION
WATER SUPPLY SHUT OFF
WATERFLOW FROM WATER SUPPLY
RESIDUAL DRAIN FROM SYSTEM
PLUGGED
FOR REMOTE
RESETTING
DELUGE
SYSTEMS
AUTOMATIC
DRAIN VALVE
OPEN TO
ATMOSPHERE
AUTOMATIC
DRAIN VALVE
CLOSED AND
WATERFLOW
TO ALARM
FIGURE 2
DV-5a VALVE OPERATION, DELUGE REMOTE-RESETTING, PRESSURE-REDUCING SYSTEMS