Dongfeng Xinjiang Air storage cylinder assembly 3513910-T8M301Y

Crafted from cold-rolled carbon steel (grade Q235B) with a wall thickness of 3mm, the air storage cylinder offers exceptional pressure-bearing capacity and durability—critical for heavy-duty braking systems. It undergoes a two-step surface treatment process: phosphatization (to enhance corrosion resistance) followed by electrostatic powder coating (epoxy resin, thickness 80-100μm), which provides long-term protection against road salt, moisture, and industrial pollutants. The cylinder sustains a maximum working pressure of 1.0MPa (10 bar) and a burst pressure of ≥3.0MPa (30 bar)—exceeding the 0.8MPa standard for commercial vehicle air storage systems—ensuring safe operation even under pressure spikes (e.g., during frequent braking on downhill roads)

To ensure zero air leakage—a vital requirement for reliable braking—the 3513910-T8M301Y assembly incorporates multiple sealing enhancements. The cylinder’s end caps (top and bottom) are welded using automatic MIG welding technology, creating a seamless, high-strength joint that eliminates weld defects (e.g., porosity, cracks) common in manual welding. Each air port is equipped with a nitrile rubber (NBR) O-ring (shore hardness 70±5) and a brass compression fitting, which forms an airtight seal when tightened to 25-30 N·m torque. Additionally, the assembly includes a built-in drain valve (G1/4 thread) with a fluororubber (FKM) seal, resistant to high temperatures (up to 200°C) and chemical degradation, preventing air leakage while enabling easy water/oil discharge

The 3513910-T8M301Y assembly features an integrated pressure relief valve (pre-set to 1.2MPa) that acts as a safety barrier for the vehicle’s pneumatic system. If the air pressure exceeds the maximum safe limit (e.g., due to a faulty air compressor regulator), the valve automatically releases excess air, preventing cylinder rupture or damage to downstream components (e.g., brake valves, air hoses). The assembly also includes a pressure gauge port (G1/8 thread) compatible with Dongfeng Xinjiang’s dashboard pressure indicators, allowing drivers to monitor real-time air pressure and detect anomalies (e.g., slow pressure build-up) early—reducing the risk of brake failure

The 3513910-T8M301Y air storage cylinder assembly fully complies with strict national and international standards for commercial vehicle pneumatic components. It meets China’s GB 150-2011 (Pressure Vessels) and GB 7258-2024 (Safety Technical Conditions for Motor Vehicles), as well as the European ECE R13 standard for braking systems. The assembly undergoes rigorous testing before leaving the factory, including: a 24-hour hydrostatic pressure test (at 2.0MPa), a 100,000-cycle pressure fatigue test (0-1.0MPa), and a 500-hour salt spray test (to verify corrosion resistance). Additionally, all materials are RoHS-compliant, ensuring environmental safety during production and disposal. This compliance guarantees the assembly’s reliability and compatibility with Dongfeng Xinjiang’s heavy-duty truck safety requirements