TFP1466
Page 3 of 18
Port
Port Description
Port Sizes, NPT Inch per ANSI B1.20.1
1 1/2 (DN40)
2 (DN50)
3 (DN80)
4 (DN100)
6 (DN150)
a
8 (DN200)
P1
Diaphragm Chamber Supply
1/2
1/2
1/2
1/2
1/2
1/2
P2
Water Supply Pressure & Alarm Test
1/2
1/2
1/2
1/2
1/2
1/2
P3
Alarm Actuation
3/4
3/4
3/4
3/4
3/4
3/4
P4
Automatic Drain Valve
1/2
1/2
1/2
1/2
1/2
1/2
P5
System Drain
3/4
3/4
3/4
3/4
3/4
3/4
P6
Main Drain
3/4
3/4
1 1/4
2
2
2
P7
System Air Supply
1/2
1/2
1/2
1/2
1/2
1/2
NOTES
a. Also applicable tp metric 165,1 mm size.
FIGURE 2A
FIGURE 2C
FIGURE 2B
FIGURE 2D
SYSTEM DRAIN CONDITION
WATER SUPPLY SHUT OFF
DRAIN FROM SYSTEM
SET CONDITION
WATER SUPPLY
SYSTEM OPEN TO ATMOSPHERE
ALARM PORT
WATERFLOW
TO ALARM
WATER SUPPLY
PRESSURE &
ALARM TEST
SYSTEM
DRAIN
OPEN
SYSTEM
DRAIN
OPEN
MAIN
DRAIN
CLOSED
MAIN
DRAIN
OPEN
DIAPHRAGM
CHAMBER
SUPPLY
FROM
UPSTREAM
SIDE OF
SHUT-OFF
VALVE
DIAPHRAGM
CHAMBER
DIAPHRAGM
CHAMBER
OPEN TO
ATMOSPHERE
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
RESIDUAL DRAIN CONDITION
WATERFLOW FROM WATER SUPPLY
WATERFLOW TO SYSTEM
RESIDUAL DRAIN FROM SYSTEM
SYSTEM
AIR
SUPPLY
AUTOMATIC
DRAIN VALVE
OPEN TO
ATMOSPHERE
AUTOMATIC
DRAIN VALVE
CLOSED
FIGURE 2
DV-5
a
VALVE OPERATION, PREACTION SYSTEMS
