Bendix 65439RX SR-5 Trailer Spring Brake Valve, 1/2″ NPT Reservoir

Product Description

  • Manufacturer: Bendix
  • Part Number: 65439RX
  • Condition: Remanufactured
  • Bendix reman valves have the same warranty as new valves
  • Reservoir connection A size = 1/2″ pipe thread
  • With anti-compounding
  • Supply (1):1/4″
  • Delivery (4):3/8″
  • Service (2):1/4″
  • Approximate Weight:  3 Lbs

The SR-5 is a trailer spring brake control valve. It mounts to a reservoir on the trailer and, like the SR-2 & 4, it controls the trailer spring brakes. The SR-5 is similar to the SR-2 and SR-4 but it allows for simpler trailer system plumbing while complying with the latest version of FMVSS 121 (Docket 90-3, Notice 4). However, unlike the SR-2 and SR-4, the SR-5 controls trailer spring brake release using trailer Supply Line pressure. Because dedicated or isolated reservoir pressure is no longer required by law for spring brake release, the SR-5 system needs only a one reservoir for service volume on single axle trailers. Two reservoirs are generally needed for 121 service volume requirements on tandem units. An integral anti-compound feature is part of the SR-5.

Older trailers using the SR-4 can easily be upgraded to the SR-5 with a minimum of repiping.

Cross References: 109617, KN26120, 65439, 65439
A cross reference listing means that this valve is a suitable replacement for the part numbers listed. Some changes in air line plumbing may be required.

The SR-5 is almost identical in appearance to the SR-2. The distinguishing characteristic of the SR-5 is a hole drilled into the flat surface between the pressure protection valve and the body.


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