BENDIX SD-03-4516 Manuel D’Utilisation

FIGURE 1 - BENDIX

®  

SR-5

™

 TRAILER SPRING BRAKE VALVE (*SHOWN WITH OPTIONAL ANTI-COMPOUNDING COVER)

SR-5

™

 VALVE 

IDENTIFICATION  

HOLE

1/4” NPT TRAILER 

SERVICE

1/4” NPT TRAILER 

SUPPLY

EXHAUST

COVER*

1/4” NPT 

SERVICE 

RESERVOIR 

(2)

3/8” NPT 

DELIVERY (4)

1/2” OR 3/4” NPT 

SPRING BRAKE 

RESERVOIR

PRESSURE 

PROTECTION 

VALVE

The Bendix

®

 SR-5

™

 valve is a reservoir-mounted trailer 

valve that can control up to four spring brake actuators 
during parking or emergency applications. It has the 
following capabilities:

•  Automatically applies trailer spring brakes in the event 

of a breakaway or trailer supply line failure.

•  Protects trailer reservoir(s) air pressure in the event of 

a breakaway or trailer supply line failure.

•  Allows no automatic trailer spring brake application 

with   air pressure loss in trailer reservoir(s).

•  Allows the trailer spring brakes to be applied and released 

repeatedly with a failed trailer reservoir(s):

•  Optional anti-compounding-prevents an overriding 

service brake signal while the trailer supply line is at 
atmospheric pressure.

•  Does not allow service system charging if a failure occurs 

in the parking brake circuit.

1 - 1/2" or 3/4" NPT Spring Brake Reservoir Mounting  

 

(SPR BK RES)

1 - 1/4"-18 NPT Trailer Supply (TRL SUP)

1 - 1/4"-18 NPT Trailer Service (TRL SER)

4 - 3/8"-18 NPT Delivery (DEL)

2 - 1/4"-18 Service Reservoir (SERV RES)

1 - Exhaust (EXH)

The SR-5

™

 valve appears very similar to the Bendix

®

 SR-2

™

 

valve. Both valves consist of a die-cast aluminum body and 
cover, pressure protection valve, and reservoir-mounting 
nipple. However, Figure 1 notes the distinguishing 
characteristic of the SR-5

™

 valve–a hole drilled into the 

fl at surface between the pressure protection valve and 
the body.