| Product Line | Brakes |
| Category Name | Air Brake Valves |
| Part Type | Spring Brake Valve |
| Alternate Part Name | Trailer Spring Brake Valve |
| Model | SR-5 |
| OEM Part Number | 65439 |
| Application Type | Semi-Trucks, Heavy Duty Trucks |
| Delivery Port Qty | 4 |
| Delivery Port Size | 3/8-18 NPT |
| Exhaust Port Size | Dust Shield |
| Reservoir Port Qty | 2 |
| Reservoir Port Size | 1/4-18 NPT |
| Spring Brake Reservoir Supply Port | 1/2-14 NPT |
| Supply Port Size | 1/4-18 NPT |
| Trailer Service Port Size | 1/4-18 NPT |
| Material | Die-cast Zinc |
| Brake Charging Priority | Spring Brake Priority |
| Check Valve Included | Yes |
| Closing Pressure | 70 psi |
| Maximum Operating Temperature | 200 deg. F (93 deg. C) |
| Minimum Operating Temperature | -40 deg. F (-40 deg. C) |
| Pressure Protection Valve Included | No |
| Regulatory Compliance | FMVSS 121 |
| Net Weight | 3.14 lb. |
| Cross References | 065439, 110500, 170065439, 65439, 65439X, 745-065439, 745065439, AV065439, BX065439, EBN065439N, EM56830, K033223, LBV-5683, LBV5683, R955065439N |
| Intended Application | - Heavy trucks, tractors, trailers, semi-trailers and commercial buses with air brake systems. Its primary function is to manage the application and release of spring brakes during parking and in emergency situations, ensuring safe and controlled braking.
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