Potter Releasing Systems - Manual (Page 23)

23
Wet System With Excess Pressure (Pressure Drop)
Waterflow Alarm Installation
Fig. 5
PS100-2
WATERFLOW SWITCH
OPERATES ON
PRESSURE DROP
BVL
BLEEDER VALVE
(OPEN)
RISER TO
SPRINKLER HEADS
CLAMP TYPE
FITTING
EXCESS
PRESSURE
GAUGE
OPEN
WATER
CHECK
VALVE
BALL DRIP VALVE
FIRE DEPT.
CONNECTION
(SIAMESE)
TAMPER
DEVICE
OSYSU
CHECK
VALVE
DRAIN
PIPE
DRAIN VALVE
(CLOSED)
EXCESS PRESSURE
LINE VALVE (OPEN)
JOCKEY
PUMP
CHECK
VALVE
BVL BLEEDER
VALVE (OPEN)
PS120-2
EXCESS PRESSURE
SUPERVISORY SWITCH
OSY CONTROL
VALVES (OPEN)
TAMPER
DEVICE
OSYSU
CITY WATER
SUPPLY