TFP1090
Page 6 of 26
CLAPPER
ASSEMBLY
FULLY OPEN
DRAIN POSITION
SET POSITION
WATER SUPPLY
SHUT OFF
FROM
WATER SUPPLY
LOW
BODY
DRAIN
PORT
CLAPPER
ASSEMBLY
LATCHED
OPEN
CLAPPER
LATCH
RESET
ASSEMBLY
SET POSITION
INTERMEDIATE
CHAMBER
AIR PRESSURE
TO SYSTEM
AIR
SUPPLY
PORT
WATER
SUPPLY
PRESSURE
& ALARM
TEST PORT
CLAPPER
ASSEMBLY
RESEATED
ALARM PORT
WATERFLOW
TO ALARM
RESET POSITION
WATER SUPPLY
SHUT OFF
OPERATED POSITION
CLAPPER
LATCH
PIVOTS TO
UNLATCH
CLAPPER
ASSEMBLY
FROM
WATER SUPPLY
WATERFLOW
TO SYSTEM
CLAPPER LATCH
PIVOTS TO ALLOW
CLAPPER ASSEMBLY
TO FULLY OPEN
ALARM PORT
OPEN TO
ATMOSPHERE
RESET
KNOB
DRAIN FROM
SYSTEM
COMPLETE
DRAIN FROM
SYSTEM
CLAPPER
ASSEMBLY
IN SET
POSITION
PUSH HERE
TO RESET
VALVE
INTERMEDIATE
CHAMBER
WATER
SEAT
VALVE
WATERWAY
CLAPPER
ASSEMBLY
ALARM
PORT
AIR
SEAT
MAIN
DRAIN
PORT
FIGURE 3D
FIGURE 3A
FIGURE 3B
FIGURE 3E
FIGURE 3C
FIGURE 3 (PART 1 OF 2)
MODEL DPV-1 DRY PIPE VALVE
PHASES OF OPERATION
DN65, DN80 AND DN100 VALVES