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Bendix  |  SKU: 289714R

289714R | Genuine Bendix® QR-1C Air Brake Quick Release Valve

$7900
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Description:
A Quick Release / Double Check Valve 289714R rapidly releases air from brake chambers (quick release) and smartly chooses the higher of two air sources to control a brake (double check). It improves braking response, safety, and prevents system interference in complex air brake circuits. QR-1C Air Brake Quick Release Valve, work condition, used take-off Kenworth T880 2024

Part Number: 289714R
Condition: Used In Good Condition
Manufacture/Brand: Bendix

Fits 289714R For Kenworth. Peterbilt, Volvo/Mack, air brake systems of heavy duty trucks, tractors, trailers, particularly in the spring brake / emergency side circuits where quick exhaust of air is necessary when brakes are released. 

Specifications For 289714R: 

Mounting: Ø .34 IN (2x) 
Differential Pressure: 0 PSI 
Supply Port: 1/4-18 NPT (Female) 
Balance Port: 1/4-18 NPT (Female) 
Delivery Port 1: 3/8-18 NPT (Female) 
Delivery Port 2: 3/8-18 NPT (Female) 
Exhaust Port: Open 
TMC Washer: QR000 
Maximum Operating Temperature: 200 °F (93 °C) 
Minimum Operating Temperature: -50 °F (-45 °C) 


Purpose of using 289714R:

Benefit Function
 Faster brake release Quick release reduces air release time
Prevents brake drag Protects from overheating and wear
 Prevents compounding Double check avoids overlapping signals
 Simplifies plumbing Allows multiple systems to share outputs safely
 Safer braking response Especially in complex heavy-truck air systems


Signs of a Quick Release Valve 289714N:

  • Slow Brake Release

    • Brakes stay partially applied longer than normal after releasing the pedal.

    • Causes brake dragging, overheating, and increased wear.

  • Excessive Brake Heat / Brake Fade

    • Due to delayed air release, brakes overheat and lose effectiveness.

  • Hissing Air Leaks

    • Audible air escaping near the valve indicating an internal leak or damaged seals.

  • Brake Dragging or Lockup

    • Brakes don’t fully release, causing wheel drag or even lockup, which can be dangerous.

  • Uneven Braking

    • If the valve fails on one side, braking may feel uneven or pull to one side.

  • Air Pressure Drop

    • The system may lose air pressure due to valve leakage, causing the air compressor to run more often.

  • Delayed Brake Application (less common but possible)

    • If the valve is stuck partially closed, brake response might be sluggish.


About the Manufacturer – Bendix:

Bendix is a leading manufacturer of air brake systems, safety technologies, and control components for commercial trucks, buses, and trailers. Known for innovations in braking, stability, and traction control, Bendix supplies OEM and aftermarket parts across North America. It is a subsidiary of Knorr-Bremse, a global leader in braking systems.

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