Description
World American WA102626 R-12 style trailer relay valve with four 1/2 in NPT delivery ports and a 4 PSI crack pressure, replacing Bendix 102626/102166 and Freightliner BW102626N on dual-circuit tractor-trailer air systems. Quick-release function exhausts brake-chamber air through the integrated dust-shielded exhaust whenever the control signal drops.
Cross References
This part replaces or is equivalent to the following part numbers:
- Automann: 170.102626
- Bendix: 102166
- Bendix: 102626
- Dayton Parts: AV102626
- Freightliner: 102626N
- Freightliner: BW102626N
- Mack: 745-102626N
- Mack: 745-102626RX
- Meritor: R95510626N
- Meritor: R95510626X
- Meritor: TDAR95510626N
- OTR: 102626P
- Power Products: 102626P
- SealCo: 110139
- Velvac: 034025
Specifications
| Manufacturer | World American |
|---|---|
| Part Number | WA102626 |
| Part Type | Relay Valve (R-12 Type) |
| Delivery Ports | (4) 1/2 in NPT |
| Supply Port | 1/2 in NPT |
| Control (Service) Port | 1/4 in NPT |
| Crack Pressure | 4 PSI |
| Thread Type | NPT |
Applications
This R-12 style relay valve fits dual-circuit tractor and trailer air-brake systems on:
- On-highway tractors and trailers using R-12 plumbing (1980s–present)
Operating range -40°F to 200°F per Bendix R-12 service literature.
Verify port size and mounting before ordering to confirm fitment.









