Description
World American WA800333 is a QR-L inline quick release valve for heavy-duty air brake systems — a direct replacement for Bendix 800333 and Volvo 3093937. The compact direct-mount body installs at the tractor protection valve and exhausts brake-line air locally, accelerating brake release on tractor and trailer chambers. Both supply and delivery ports are 1/2″ NPT, with a 3.4″ overall length suited for tight frame-rail installs. Backed by a 1-year / 100,000-mile warranty.
Signs You Need a New Quick Release Valve
- Slow brake release causing dragging brakes or excessive heat
- Audible air leak at the valve body or exhaust port
- Trailer brakes release noticeably slower than tractor brakes
- Increased stopping distance or spongy pedal feel
- Excessive air consumption / compressor cycling
- Failed DOT inspection on air brake system performance
Specifications
| Manufacturer | World American |
|---|---|
| Part Number | WA800333 |
| Part Type | Quick release valve, QR-L inline |
| Mount Style | Direct mount / inline |
| Supply Port | 1/2″ NPT |
| Delivery Port | 1/2″ NPT |
| Overall Length | 3.4 in |
| Warranty | 1 year / 100,000 miles |
Cross References
This part replaces or is equivalent to the following part numbers:
- Bendix: 800333, 065707, 5003391, 5003394, 5003395, 800333N
- Volvo: 3093937
- Mack: 745-800333, 745-800383, 745-065707
- Freightliner: BW800333
- Meritor: R955800333N
- Automann: 170.800333
- Tectran: 14482
- Newstar: S-18044
- Velvac: 032020
- Dayton Parts: AV800333
- Euclid: E-BN800333N
- Torque Parts: TR800333
- Fleetrite: FLTBV333, FS800333N
- MCI: 04-22-6019
Applications
The QR-L inline body is used on Class 6–8 tractors, vocational trucks, and motor coaches across the on-highway market:
- Freightliner Cascadia, Columbia, Century, Coronado, M2, Classic
- Volvo VNL, VNR, VNM, VHD
- Mack Anthem, Pinnacle, Granite, CHU, CXU, GU
- Kenworth T680, T880, T800, W900, T660, T370
- Peterbilt 579, 389, 388, 387, 386, 384, 379, 367, 365
- International / Navistar LT, LoneStar, ProStar, 9900, 9400
- Western Star 4900, 5700, 4700
- MCI, Prevost and other commercial coaches
When replacing the valve, inspect all air lines and fittings for damage. Use thread sealant tape on NPT connections and verify proper brake release timing after installation.
