QT-7.5 Air Master
Quincy Compressor
50121M201, May 2001
13
3501 Wismann Lane, Quincy IL 62305-3116
PIX 1186.eps
CONTROL PIPING SCHEMATICS
relief valve
pressure gauge
release valve
pressure switch
check valve
discharge line
pilot valve
with lockout stem
relief valve
pressure gauge
release valve
pressure switch
check valve
discharge line
pressure gauge
relief valve
check valve
discharge line
to low and high
pressure
head unloaders
pilot valve
Pilot valve is open (stem screwed out)
for Continuous Run operation
Pilot valve is closed (stem screwed in)
Control Piping
For Automatic Start/Stop
(with loadless starting)
Control Piping
For Continuous Run
Control Piping
For Dual Control
to low and high
pressure
head unloaders
