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Fortpro is a trusted leader in the development and manufacturing of premium-quality truck parts designed to meet the demands of semi-trucks and heavy-duty trucks. Renowned for innovation, durability, and reliability, Fortpro products are engineered to enhance performance, safety, and efficiency across a wide range of trucking applications.
Whether you're seeking OEM replacement parts or upgrades, Fortpro provides a diverse selection of components backed by a global reputation for quality and innovation. Trust Fortpro for the parts you need to keep your vehicles on the road longer and stronger.
| Basic Part Information | |||
|---|---|---|---|
| Product Line | Brakes | Category Name | Air Brake Valves |
| Part Type | Safety Valve | Alternate Part Name | Air Relief Valve, Pressure Relief Valve |
| Model | ST-3 | OEM Part Number | 284142 |
| Application/Fitment Attributes | |||
| Application Type | Semi-Trucks, Heavy Duty Trucks | Inlet Port Size | 1/4-18 NPT |
| Vent Size | Ø 0.125 in. | ||
| Dimensional/Physical Attributes | |||
| Material | Brass | ||
| Technical/Performance Attributes | |||
| Adjustable | No | Closing Pressure | 75% of the Minimum Opening Pressure |
| Maximum Operating Temperature | 200 deg. F (93 deg. C) | Minimum Operating Temperature | -40 deg. F (-40 deg. C) |
| Number of Vents | 1 | Opening Pressure | 150 ± 8 psi |
| Packaging / Logistics Attributes: | |||
| Net Weight | 0.24 lb. | ||
| Additional Information | |||
| Intended Application |
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- Automann: 170284142
- Bendix: 284142, 284142N
- Dayton Parts: AV284142
- Euclid: EBN205105N
- Haldex: KN31400
- Mack: 20QE1129
- Meritor: RKN31400
- Navistar-International: 408425C91
Dimensions Not Available.