BENDIX SR-7 SPRING BRK MODULATING VALVE Applications - Page 2

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BENDIX SR-7 SPRING BRK MODULATING VALVE Applications
DOUBLE CHECK
VALVE
CHECK VALVE
COVER
PARK CONTROL
PORT
IN-LINE SINGLE
CHECK VALVE
SPRING
O-RING
SUPPLY PORT
CHECK VALVE
GUIDE
O-RING
BALL CHECK
VALVE
SPRING
O-RING
FIGURE 2 - SECTIONAL VIEW OF SR-7

OPERATION

The operation guidelines shown in this manual represent
the relay valve based SR-7
shown in figure 3). A quick release based valve functions
similarly to the relay valve based version with the exception
2
MAIN PISTON
O-RING
O-RING
VALVE SEAT
RETAINING RING
DIAPHRAGM
DIAPHRAGM WASHER
™
SPRING BRAKE MODULATING VALVE USED IN RELAY VALVE APPLICATIONS
™
(refer to system schematic
CONTROL PISTON
SPRING GUIDE
EXHAUST
PORT
#10 TORX HEAD SCREW
that all air delivered to spring brakes passes through the
park control port through the in-line single check valve. The
™
SR-7
quick release style can be easily identified by the
pipe plug in the supply port of the valve.
UPPER BODY
RETAINING RING
O-RING
O-RING
SPACER
MAIN PISTON SPRING
STATIC PISTON
O-RING
O-RING
STATIC PISTON
SPRING
O-RING
O-RING
O-RING
LOWER BODY
VALVE RETAINER
SPRING
1/4-20 MACHINE
SCREWS
INLET / EXHAUST
VALVE
LOWER VALVE
GUIDE
RETAINING RING