Pressure Relief Valve – Core Pressure Safety Component for Commercial Vehicle Air Suspension

Description

The Pressure Relief Valve (Part No. ​4341001250) is a critical safety component in commercial vehicle air suspension systems, designed to ​dynamically regulate airbag pressure (0.6~1.2MPa) and prevent overload-induced failures. Featuring a ​hard-anodized aluminum alloy body and ​stainless steel spring (≥5M cycles), it achieves ≤0.2s response time and ≤0.05mL/min leakage (@1.5MPa), compliant with ​ISO 4414 and ​SAE J2194. Key functions:

1. ​Dynamic Pressure Balance: Maintains pressure fluctuation ≤±3% via spring-valve coordination.
2. ​Safety Redundancy: Acts as a mechanical failsafe if ECAS fails.
3. ​Environmental Resistance: EPDM seals (-40℃~150℃) resist moisture, salt, and road chemicals.

Key Importance:

• ​Vehicle Stability: Pressure failure risks cargo shift or rollover.
• ​Material Impact:
  • ​Lightweight: Aluminum reduces weight by 50% vs. cast iron.
  • ​Spring Precision: ±0.01mm wire tolerance ensures ≤1.5% threshold error.
  • ​Seal Durability: EPDM resists AdBlue corrosion (5-year/500,000km lifespan).

Replacement Guidelines:

1. ​Pressure Calibration: Post-installation calibration with digital gauge (0~2.5MPa, ±0.5% accuracy).
2. ​Cleanliness: Ethanol-cleaned valve interior to prevent particle jamming.
3. ​OEM Parts: Non-genuine valves may cause threshold deviations.