BENDIX SV-1 SYNCHRO-SV-3 TRAILER RELEASE Manual

®
Bendix SV-1 Synchro Valve SV-3
® ™
EXHAUST
SUPPLY
1/4" P.T.
CONTROL
CAP NUT
PISTON
O-RING
1/8" P.T.
EXHAUST
BODY
VALVE
SPRING
GUIDE
1/4" P.T.
SUPPLY
FIGURE 1 - SV-1 SYNCHRO VALVE
™
DESCRIPTION
The SV-1 synchro valve and the SV-3
™
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
™
release valves (figure 2) are air controlled, "On-Off" (non-
graduating) control valves that are primarily used to delay or
& SV-4
™
CONTROL
DELIVERY
O-RING
O-RING
PISTON
SPRING
1/4" P.T.
DELIVERY
VALVE
SPRING
O-RING
CAP NUT
trailer release valve
™
& SV-4 trailer
™ ™
Trailer Release Valve
™
CONTROL
SV-3
™
VALVE
CAP NUT
PISTON
PISTON SPRING
1/8" P.T.
EXHAUST
SPRING
GUIDE
O-RING
CHECK VALVE
DETAIL OF SV-4
™
VALVE
FIGURE 2 - SV-3 ™ & SV-4 ™ TRAILER RELEASE VALVE
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
EXHAUST
DELIVERY
SV-4
VALVE
SUPPLY
1/4" P.T.
CONTROL
O-RING
O-RING
O-RING
BODY
1/4" P.T.
DELIVERY
VALVE
VALVE
SPRING
CAP NUT
1/4" P.T.
DETAIL OF SV-3
SUPPLY
VALVE
™
™
1