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AIR PRESSURE
TO SYSTEM
AIR
SUPPLY
PORT
CLAPPER
ASSEMBLY
IN SET
POSITION
FROM
WATER SUPPLY
FIGURE 3A
SET POSITION
DRAIN FROM
SYSTEM
CLAPPER
ASSEMBLY
LATCHED
OPEN
LOW
BODY
DRAIN
PORT
MAIN
DRAIN
PORT
WATER SUPPLY
SHUT OFF
FIGURE 3D
DRAIN POSITION
CLAPPER
ASSEMBLY
FULLY OPEN
CLAPPER LATCH
PIVOTS TO ALLOW
CLAPPER ASSEMBLY
TO FULLY OPEN
ALARM PORT
OPEN TO
ATMOSPHERE
WATER
SUPPLY
PRESSURE
& ALARM
TEST PORT
CLAPPER
ASSEMBLY
WATER
SEAT
INTERMEDIATE
CHAMBER
FIGURE 3B
SET POSITION
INTERMEDIATE
CHAMBER
RESET
ASSEMBLY
CLAPPER
LATCH
PIVOTS TO
UNLATCH
CLAPPER
ASSEMBLY
CLAPPER
LATCH
FIGURE 3 (PART 2 OF 2)
MODEL DPV-1 DRY PIPE VALVE
PHASES OF OPERATION
DN150 VALVE
WATERFLOW
TO SYSTEM
AIR
FROM
SEAT
WATER SUPPLY
FIGURE 3C
OPERATED POSITION
ALARM
DRAIN FROM
PORT
SYSTEM
COMPLETE
VALVE
WATERWAY
WATER SUPPLY
SHUT OFF
FIGURE 3E
RESET POSITION
TFP1090
Page 7 of 26
ALARM PORT
WATERFLOW
TO ALARM
PUSH HERE
TO RESET
VALVE
RESET
KNOB
CLAPPER
ASSEMBLY
RESEATED
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