| Product Line | Brakes |
| Category Name | Air Brake Valves |
| Part Type | Push Pull Valve |
| Alternate Part Name | Trailer Supply Valve |
| Model | PP-7 |
| OEM Part Number | 288239 |
| Application Type | Heavy Duty Trucks, Semi-Trucks |
| Delivery Port Size | 1/4-18 NPT |
| Exhaust Port Size | Open |
| Mounting Hole Size | 7/8-20 UNEF-2A |
| Supply Port Size | 1/8-27 NPT |
| Material | Die-cast Zinc |
| Control (Pilot / AUX) Port | 1/8-27 NPT |
| Knob Included | No |
| Mounting Nut Included | No |
| Plunger / Button Height | 1.14 in. |
| Plunger Diameter | Ø .374 in. |
| Automatic Release Pressure | 40 PSI |
| Maximum Operating Temperature | 200 deg. F (93 deg. C) |
| Minimum Operating Temperature | -40 deg. F (-40 deg. C) |
| Trailer Override Pressure | 26 ± 6 psi |
| Net Weight | 1.22 lb. |
| Cross References | 1693143C1, 170288239, 20QE3139R, 288239, 288239N, 288239RX, 288239X, AV288239, EBN288239N, EM35950, KN20025, LPP-3595, OR288239, OR288239X, R955288239N |
| Intended Application | Used on trucks and tractors with air brake systems. Its primary function is to control the air supply to the trailer from the control panel in the cab. It is part of the tractor protection system, working in conjunction with the parking control valve to synchronize the parking and emergency brakes of both the tractor and trailer. |
