Potter Releasing Systems User Manual
Page 27
27
Dry Pipe Valve System
Waterflow Alarm Installation
Fig. 7
TO WATER
MOTOR GONG
RISER TO
SPRINKLER HEADS
AIR SUPPLY
AIR PRESSURE
SUPERVISORY
PS40-1
PS40-2
AIR
PRESSURE
GAUGE
BVL BLEEDER
TEST VALVE
(OPEN)
PRIMING
CHAMBER
SHUT-OFF
VALVE
(CLOSED)
INTERMEDIATE
CHAMBER
DRAIN VALVE (CLOSED)
TAMPER
DEVICE
OSYSU
OS & Y
CONTROL
VALVE
(OPEN)
AIR SUPPLY
VALVE
(OPEN)
CHECK
WATERFLOW
SWITCH
PS10-1
PS10-2
PETCOCK
(OPEN)
RBVS
CHECK
BALL
DRIP
VALVE
AIR
PRESSURE
WATER LEVEL
WATER BY-PASS
TEST VALVE
(CLOSED)
DRIP
CUP
WATER
PRESSURE
GAUGE
CHECK
WATER PRESSURE
FROM CITY MAINS
DRAIN
PIPE
DWG# 8704200-4A
Note:
Per NFPA72 2010 23.8.5.10.4, there shall be
no shut-off valve in line to a pressure type
waterflow switch, unless the shut-off ball
valve is electrically supervised with Potter
Model RBVS (Retrofit Ball Valve Switch).