Check Specification & Cross-references
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 Information6 attributes
| Product Line | Brakes |
|---|---|
| Category Name | Air Brake Valves |
| Part Type | Safety Valve |
| Alternate Part Name | Air Relief Valve, Pressure Relief Valve |
| Model | ST-1 |
| OEM Part Number | 205105 |
Application/Fitment Attributes3 attributes
| Application Type | Semi-Trucks, Heavy Duty Trucks |
|---|---|
| Inlet Port Size | 1/4-18 NPT |
| Vent Size | Ø 0.125 in. |
Dimensional/Physical Attributes1 attribute
| Material | Brass |
|---|
Technical/Performance Attributes6 attributes
| Adjustable | Yes |
|---|---|
| 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 ± 5 psi |
Packaging / Logistics Attributes:1 attribute
| Net Weight | 0.30 lb. |
|---|
Intended Application
Intended Application
- Used in heavy vehicle air brake systems to protect the pneumatic system against overpressure. Its main application focuses on the automatic release of compressed air when the pressure in the system exceeds a preset limit, preventing damage to components such as air tanks, valves, hoses and brake chambers.
- Commonly mounted on the primary air tank or at points where excessive pressure increase could pose a risk.
- Automann: 170205105
- Bendix: 205105, 205105N
- Euclid: EBN205105N
- Haldex: KN31400, KN31400N
- Mack: 745-205105, 745-205105N
- Meritor: R955205105N
- Navistar-International: 1676692C1
- PAI: EM56780
Dimensions Not Available.