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A manual push-pull control on the Bendix Trailer Brake Supply Valve lets a driver cut trailer air supply by hand, useful when parking or facing a supply-line problem. The Bendix 288239N threads into the same supply-line ports the valve it replaces used, so the tractor's air system reconnects without new fittings. Once reconnected, pulling that knob applies the trailer's spring brakes and closes the supply line, letting the driver isolate a leak without leaving the cab. Having manual control over trailer supply air lets the driver respond to a supply problem instead of waiting on an automatic system.
| Automatic Release Pressure | 40 PSI |
| Button Color | Not applicable to this part |
| Button Shape | Not applicable to this part |
| Button Text | Not applicable to this part |
| Button(s) Included | No |
| Control (Pilot / AUX) Port | 1/8-27 NPT |
| Delivery Port 1 | 1/4-18 NPT |
| Delivery Port 2 | Not applicable to this part |
| Dial Included | No |
| Exhaust Port | Open |
| Market Indicator | Aftermarket New |
| Maximum Operating Temperature | 200 AdegF (93 AdegC) |
| Minimum Operating Temperature | -40 AdegF (-40 AdegC) |
| Mounting | 7/8-20 UNEF-2A |
| Mounting Nut Included | No |
| Pilot Trip Pressure | Not applicable to this part |
| Plunger / Button Height | 1.14 IN |
| Plunger Diameter | A~ .374 IN |
| Rubber Boot Included | No |
| Supply Port | 1/8-27 NPT |
| Trailer Override Pressure | 26 A+- 6 PSI |
| VMRS Code 2 | 013-010-406 |
| VMRS Description 2 | Valve - Trailer Air Supply |
| Country of Origin (Primary) | MX |
| UPC | 04068078431368 |
| VMRS Code | 013010017 |
| Brand | Part Number |
|---|---|
| BEN288239N, BW288239N | |
| MERITOR | R955288239N |
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