| Product Line | Brakes |
| Category Name | Air Brake Valves |
| Part Type | Relay Valve |
| Model | R-8 |
| OEM Part Number | 286370 |
| Application Type | Semi-Trucks, Heavy Duty Trucks |
| Balance Port Size | 1/8-27 NPT |
| Compatible Repair Kit Part Number | F224641 |
| Delivery Port Qty | 3 |
| Delivery Port Size | 1/4-18 NPT, 1/2-14 NPT, 1/2-14 NPT |
| Exhaust Port Size | Dust Shield |
| Mounting Hole Qty | 2 |
| Mounting Hole Size | 0.41 in. |
| Service Port Size | 1/4-18 NPT |
| Supply Port Size | 3/4-14 NPT |
| Supply Port Qty | 2 |
| Material | Die-cast Aluminum |
| Crack Pressure | 3.0 psi |
| Maximum Operating Temperature | 200 deg. F (93 deg. C) |
| Minimum Operating Temperature | -40 deg. F (-40 deg. C) |
| Service Port Orientation | 90 deg. |
| Net Weight | 3.14 lb. |
| Cross References | 1676729C1, 170286370, 286370, 286370N, 286370RX, 286370X, 745-286370N, 745286370N, EBN286370N, EM56160, R955286370N, RKN28071 |
| Intended Application | - For air brake systems of trucks, trailers and buses.
- Ideal for systems with spring brakes, where the anti-compounding function is crucial to avoid double brake application problems.
- Improves the efficiency of the brake system in heavy-duty and commercial vehicles.
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