Description

Overview

The QR-1 Quick Release Valve 3/8in x 3/8in speeds exhaust from brake chambers so trailer brakes release quickly and predictably. Install it close to the actuators and, as a result, you shorten the exhaust path and improve response on heavy trailers.

Features

• QR-1 pattern body with 3/8 NPT supply and twin 3/8 NPT delivery ports
• 1 psi crack pressure for prompt reset of service circuits
• 1 1/2 inch mounting-hole spacing for straightforward replacement work
• Compact form that suits axle or crossmember mounting near chambers

Specifications and Materials

Part number: AB8315A.
Model: QR-1 style quick release valve. Function: accelerates chamber exhaust for faster brake release. Crack pressure: 1 psi. Ports: 3/8 NPT supply, 3/8 NPT deliveries (2). Recommended location: near the brake chambers to minimise hose length.
For construction details, operation and servicing, see the Bendix QR-1 quick release valves manufacturer service data.

Compatibility and Fitment

This cross-reference listing means this valve is a suitable replacement for the part numbers and applications shown. Some changes in air line plumbing may be required.
288251, 104530, 229851, 229859, 1079, 1038846, RKN32005, 1041250504, E6HZ2A095A, 2014530, 33003373, KN32005, 4820005872377, G101884S, WA229859, 1677359C91, 288251B1, 32575429R91, 1392370, 351104, 801279, 9351104, S1644B, S4922, 11602155, 032015

Compliance and Safety

Depressurise the air system before removal. After installation, perform a soap-and-water leak test, then cycle the brakes and verify full pressure recovery. Finally, confirm each connected chamber exhausts freely through the valve.

Trailer Applications

Use this QR-1 valve on semi-trailers, B-doubles and dollies where rapid brake release reduces lining drag and heat. For example, you can mount it between a pair of service chambers to vent locally. Moreover, the standard porting supports quick retrofits that keep downtime low.

Cross-reference and Suitability

This part cross-references to or suits the following equivalent part numbers and compatible alternatives:

Why Choose ICS Trailers

We verify specifications against authoritative data and supply parts that installers trust. Consequently, your team can complete maintenance faster and return equipment to service with confidence.
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