Dongfeng GX Trailer valve bracket assembly 2701510-H02P0

The assembly features a rigid, low-profile structural design tailored to securely fasten the trailer valve while minimizing interference with other undercarriage components (e.g., fuel tanks, exhaust pipes, suspension parts). The bracket body incorporates a flat, reinforced mounting platform for the trailer valve—equipped with threaded inserts (typically M8-M10) that provide strong thread engagement, preventing valve loosening due to vehicle vibration. Key stress areas (e.g., chassis mounting legs, valve platform edges) are reinforced with integrated ribs, which increase the bracket’s torsional rigidity by 30% compared to non-reinforced designs. Additionally, the bracket includes pre-drilled cable management holes to route air lines and electrical wires (for ABS systems) neatly, reducing the risk of line abrasion or tangling during operation

Bracket Body: Constructed from hot-rolled carbon steel (Q235B) with a thickness of 4-6mm—selected for its high impact resistance (≥ 27 J at -40°C) and compatibility with welding processes. The material undergoes a zinc phosphate pretreatment to enhance coating adhesion and prevent substrate rust.

Surface Protection: Finished with a two-layer coating system: a base layer of electrophoretic paint (8-12μm) for corrosion resistance, and a top layer of electrostatic powder coating (50-70μm, epoxy-polyester hybrid). This coating combination passes 1,000+ hours of neutral salt spray testing (per ISO 9227), ensuring resistance to road salt, moisture, and industrial contaminants in harsh environments

Mounting Hardware: Included high-strength bolts (grade 8.8) and lock washers (stainless steel 304) provide secure attachment to the chassis. The bolts feature anti-seize coating to facilitate future maintenance and prevent thread galling

As a foundational component of the Dongfeng GX’s trailer brake system, this bracket assembly fulfills three key functions:

Valve Stabilization: It holds the trailer control valve in a fixed, vibration-damped position—preventing valve movement that could disrupt air pressure regulation or damage internal components (e.g., diaphragms, solenoids). This ensures consistent brake response when activating the trailer’s service or emergency brakes.

Load Distribution: It transfers the weight of the trailer valve and connected air lines to the chassis frame, distributing stress evenly across the bracket’s mounting points to avoid localized chassis deformation.

System Protection: By elevating the trailer valve 50-80mm above the chassis (per GX’s ground clearance requirements), the bracket protects the valve from impact with road debris, potholes, or water splashes—reducing the risk of physical damage or water ingress that could cause brake failure

This trailer valve bracket assembly meets global commercial vehicle standards, including China’s GB/T 19910 (Automotive structural steel parts) and ISO 12944 (Paints and varnishes—Corrosion protection of steel structures by protective paint systems), as well as IATF 16949 quality management requirements. Each unit undergoes comprehensive pre-shipment testing:

Dimensional Validation: Coordinate measuring machines (CMM) verify all critical dimensions (hole spacing, flatness, height) within OEM tolerances to ensure perfect fit.

Vibration Durability Testing: Subjected to 500 hours of sinusoidal vibration testing (5-200 Hz, 10 g acceleration) to simulate real-road conditions—no structural deformation or coating peeling is allowed.

Load-Bearing Testing: Static load testing (applying 5x the trailer valve’s weight for 24 hours) confirms no permanent deformation, ensuring the bracket can withstand extreme loads during heavy braking or rough-road driving.

Environmental Testing: Exposure to -40°C to 80°C temperature cycles (100 cycles) and high humidity (95% RH at 40°C for 500 hours) validates performance stability in extreme climates.

Backed by a 24-month manufacturer’s warranty, the assembly ensures long-term reliability for Dongfeng GX’s trailer-towing applications (e.g., freight transport, heavy-duty hauling)