Ensure your air system’s integrity with the reliability of the Automann 170.131081 Safety Relief Valve. This ST-4 type valve is a critical safety component designed to protect air tanks and reservoirs from over-pressurization. Pre-set to discharge at 250 PSI, it provides an immediate exhaust of air to prevent system damage or tank failure in the event of a governor or compressor malfunction.
| Feature | Details |
| Part Number | 170.131081 |
| Manufacturer | Automann |
| Valve Type | ST-4 Safety / Pressure Relief |
| Pressure Setting | 250 PSI |
| Inlet Size | 1/2" NPT (Male) |
| Category | Air Brake & System Components |
This valve is a universal heavy-duty component found on various commercial vehicles, including Volvo trucks and any Class 7 or 8 tractor/trailer air system requiring a high-pressure safety relief point.
The Automann 170.131081 is a direct replacement for the following OEM and industry part numbers:
Volvo: 3969352
Meritor: R955131081N
Euclid: EBN131081N
Bendix: 131081 (ST-4 Type)
High-Pressure Protection: Factory-set at 250 PSI for heavy-duty applications.
Compact & Durable: Designed with a robust body to withstand vibration and harsh under-chassis environments.
Standard Threading: Features a 1/2" NPT male thread for easy installation into standard air tank ports.
Corrosion Resistant: Built to resist the moisture and contaminants commonly found in air brake systems
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