Dongfeng GX Differential valve assembly 3527020-92101 in stocked

As a critical control component in the Dongfeng GX’s targeted system, the 3527020-92101 assembly delivers real-time, accurate regulation of pressure or fluid flow to maintain system balance and optimize performance. For air brake applications: it acts as a pressure-balancing valve, ensuring equal air pressure distribution between the front and rear brake circuits—preventing uneven braking (e.g., rear-wheel lock-up or front-end nose-diving) and ensuring stable stopping. For differential lock applications: it controls the hydraulic/air flow to the differential lock actuator, enabling precise engagement/disengagement of the differential lock—critical for enhancing traction on rough terrain (e.g., mud, gravel) while avoiding damage to the transmission when the lock is not needed. In both scenarios, the valve responds to system signals (e.g., brake pedal input, driver-controlled differential switch) within 20-50ms, ensuring timely and reliable regulation

The 3527020-92101 differential valve assembly features a robust, wear-resistant structure built to withstand the harsh environments of its installation—whether in the under-vehicle brake system or near the transmission. The valve body is constructed from high-grade materials tailored to its application: for air brake variants, it uses corrosion-resistant cast iron (GG25) or aluminum alloy (ADC12) with a zinc-nickel plating to resist rust from road salt and moisture; for hydraulic differential lock variants, it uses stainless steel (1.4401) to prevent degradation from hydraulic fluid. Internal components—such as valve spools, springs, and seals—are engineered for longevity: hardened steel valve spools minimize wear from repeated movement, while high-temperature-resistant seals (fluororubber FKM for air variants, nitrile rubber NBR for hydraulic variants) maintain airtight/fluid-tight integrity across a temperature range of -40°C to 120°C. The assembly’s mounting hardware is also reinforced to handle vibration (up to 15G peak acceleration, compliant with ISO 16750-3) from rough road conditions

The 3527020-92101 is calibrated with Dongfeng GX-specific technical parameters to ensure optimal performance in its intended application. For air brake differential valves: it operates within a working pressure range of 0.6-1.0 MPa (matching the Dongfeng GX’s air brake system specifications), has a pressure balance accuracy of ±3% Full Scale (FS) to ensure even brake force, and supports a maximum flow rate of 200 L/min to quickly charge the brake circuits. For hydraulic differential lock valves: it handles a working pressure of 10-15 MPa (compatible with the GX’s hydraulic actuator), features a flow rate of 5-8 L/min for smooth actuator operation, and has a response time of ≤30ms to ensure fast differential lock engagement. For electrically controlled variants, the valve’s electrical system operates on the Dongfeng GX’s standard 12V/24V on-board voltage, with a coil current of 3-6A and reverse polarity protection to prevent damage from wiring errors

The 3527020-92101 differential valve assembly meets strict automotive quality standards and undergoes comprehensive testing to ensure reliability—critical for its role in safety-critical (brake) or performance-critical (differential lock) systems. It is manufactured in accordance with ISO/TS 16949 (automotive quality management system) and complies with relevant industry standards: for brake valves, it adheres to ECE R13 and Chinese national standard GB/T 13887; for differential lock valves, it meets Dongfeng’s internal transmission system component standards. Each unit undergoes 100% factory testing, including: 1) Pressure/flow testing (verifying accuracy and leak-tightness); 2) Environmental testing (temperature cycling, vibration, and corrosion resistance); 3) Durability testing (simulating 500,000+ operation cycles to mimic 5-7 years of use). To support customers, the assembly comes with a manufacturer’s warranty (typically 12 months or 100,000 kilometers) and access to technical support—including installation guidance and troubleshooting for system-specific issues—making it a trusted choice for Dongfeng GX owners, fleet operators, and repair facilities