Bendix Commercial Vehicle Systems SV-1 SYNCHRO/SV-3 TRAILER RELEASE - Manual

1
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SD-03-4020
Bendix ® SV-1 ™ Synchro Valve SV-3 ™ & SV-4 ™ Trailer Release Valve
FIGURE 1 - SV-1 ™ SYNCHRO VALVE
FIGURE 2 - SV-3 ™ & SV-4 ™ TRAILER RELEASE VALVE
1/4" P.T.
DELIVERY
PISTON
VALVE
BODY
CAP NUT
VALVE
SPRING
O-RING
SPRING
GUIDE
1/4" P.T.
CONTROL
1/8" P.T.
EXHAUST
O-RING
O-RING
CAP NUT
O-RING PISTON
SPRING
1/4" P.T.
SUPPLY
CONTROL
EXHAUST
SUPPLY
DELIVERY
CONTROL
EXHAUST
SUPPLY
DELIVERY
DESCRIPTION
The SV-1 ™ synchro valve and the SV-3 ™ trailer release valve
are pilot operated, non-graduating pneumatic control valves.
These valves are used to control air from a remote supply,
have set opening and closing pressures and can be used to
delay or sequence the action of other pneumatic devices.
GENERAL
The SV-1 ™ synchro valve (figure 1) and SV-3 ™ & SV-4 ™ trailer
release valves (figure 2) are air controlled, “On-Off” (non-
graduating) control valves that are primarily used to delay or
sequence various devices and events in the air brake system.
These valves can be operated either in an automatic or
manual mode using different air connection methods.
Two .28 inch mounting holes are provided in the die cast
aluminum body for panel or frame mounting. Two hex cap
nuts at the ends of the cylindrical valve body retain the internal
1/4" P.T.
DELIVERY
PISTON
VALVE
BODY
CAP NUT
VALVE
SPRING
O-RING
SPRING
GUIDE
1/4" P.T.
CONTROL
1/8" P.T.
EXHAUST
O-RING
O-RING
CAP NUT
PISTON SPRING
1/4" P.T.
SUPPLY
O-RING
CHECK VALVE
DETAIL OF SV-4 ™
VALVE
SV-4 ™
VALVE
SV-3 ™
VALVE
DETAIL OF SV-3 ™
VALVE