| Product Line | Brakes |
| Category Name | Air Brake Valves |
| Part Type | Push Pull Valve |
| Alternate Part Name | Control Valve |
| Model | PP-1 |
| OEM Part Number | 284171 |
| Application Type | Heavy Duty Trucks, Semi-Trucks |
| Delivery Port Qty | 2 |
| Delivery Port Size | 1/8-27 NPT |
| Exhaust Port Size | 1/8-27 NPT |
| Mounting Hole Size | 7/8-20 UNEF-2A |
| Supply Port Size | 1/8-27 NPT |
| Material | Die-cast Zinc |
| Button Color | Yellow |
| Button Shape | Diamond |
| Button Text | Pull to Apply | Parking Brake | Push to Release |
| Knob Included | Yes |
| Mounting Nut Included | Yes |
| Plunger / Button Height | 1.64 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) |
| Net Weight | 0.74 lb. |
| Cross References | 284171, 745-284171, 745284171, EM56250, KN20021, LPP-5625, N20960, RKN20021 |
| Intended Application | Air brake systems for trucks and commercial vehicles. This is a manually operated push-pull valve, allowing on-off control of air flow with an exhaust function.Used in applications where reliable air control is required, such as parking and auxiliary brake systems on trucks and trailers. |
| BOM | "-Push Pull Valve: 1 -Parking Brake Knob: 1 -Nut: 1" |
