26A81X-0039 Valve Quick Release (1) 3/8 (2) 3/8 QR-1 KN32005

It’s an air brake quick release valve designed to vent air quickly so brake chambers release faster and more consistently. This helps reduce brake lag and can improve overall brake response. It’s also commonly referenced as a QR-1 quick release valve and KN32005 valve in cross-references.

Verify the port sizes and count before installation, including any 3/8 quick release valve fittings required for your plumbing. This valve configuration uses one 3/8 supply port and two 3/8 delivery ports, which should match the line size and fittings on your air brake circuit. If your system uses different tube or NPT sizes, use the correct adapters and confirm they’re rated for air brake service.

It’s commonly identified as an NYC quick release valve and described as a QR-1 quick release valve, with KN32005 valve listed as an interchange reference. Compatibility depends on matching the port configuration, mounting style, and operating function in your air brake system. Always confirm the application and replace any worn fittings or air lines to prevent leaks.