Dongfeng Kinland truck spare parts Bent through quick insertion tube connector RQ83222N4E

Built to streamline pipeline assembly and maintenance, this connector features an advanced push-to-connect mechanism that eliminates the need for wrenches, crimpers, or sealants. The integrated design combines a stainless steel locking collet, pre-installed seal ring, and release sleeve: technicians simply insert the Φ12mm compatible tube into the connector until a clear “click” confirms secure engagement, completing installation in 8 seconds—85% faster than traditional threaded connectors. The 90° elbow design is optimized for Dongfeng Kinland’s dense chassis layout, allowing pipeline routing around components like fuel tanks and brake cylinders without kinking (which causes pressure loss). A ergonomic release sleeve enables easy disassembly by pressing and pulling the tube, cutting maintenance time for air suspension repairs by 70%

As a critical barrier against fluid and gas leakage, the RQ83222N4E integrates a triple-layer sealing structure that meets the strict requirements of truck pneumatic systems. The primary seal is a food-grade EPDM rubber ring (Shore A hardness 72) that conforms to the tube’s outer surface, maintaining a leak-tight seal under 1.8MPa working pressure (air suspension peak pressure) for 48 consecutive hours. A secondary FKM O-ring seals the threaded interface, resisting swelling and degradation from diesel fuel, coolant, and road cleaning agents. The third layer is a labyrinth dust shield between the locking collet and tube, blocking debris from entering the sealing area. This system prevents catastrophic failures like air suspension deflation (causing load imbalance) and pneumatic control leaks (disrupting brake auxiliary functions)

Engineered to withstand the extreme conditions of truck operation, the connector features a rugged, corrosion-resistant build. The main body is precision-machined from lead-free brass (CuZn40Sn1) with a 2.2mm wall thickness, achieving a tensile strength of 340MPa and resisting deformation from chassis vibration (10-600Hz). The surface undergoes tri-treatment: zinc plating (10μm thickness), passivation, and a clear chromate topcoat, passing 2000-hour neutral salt spray testing (ASTM B117) with no rust or pitting—ideal for coastal regions and snowy areas with road salt. The locking collet is made of 316 stainless steel (HRC 48) for wear resistance, enduring 150+ insertion/removal cycles without fatigue. All seals operate stably from -45℃ to 125℃, adapting to frigid winters and high-temperature engine bays

This quick-insert connector delivers substantial cost savings and system protection for Dongfeng Kinland operators. Its tool-free design cuts labor costs by 65% compared to traditional connectors, while the fast disassembly feature minimizes downtime (critical for logistics fleets where every hour of idleness costs $800+). The leak-proof sealing prevents costly issues: air suspension leaks (repair costs up to $600) and pneumatic control failures (leading to delivery delays). As a genuine OE part, it avoids mismatched aftermarket connectors that cause tube damage (a 3m air suspension hose costs $180+ to replace). The connector’s 200,000km service life—three times that of non-OE alternatives—reduces replacement frequency. Backed by a 1-year/150,000km Dongfeng warranty, it ensures reliable pipeline performance and predictable maintenance expenses