Relief Valve
0102030405
SK230-6E Main Relief Valve XJBN-00163
SK230-6E Main Relief Valve XJBN-00163
SK230-6E Main Relief Valve XJBN-00163
Exclusive to SK230-6E series excavators (part no.: XJBN-00163), this main relief valve is a core hydraulic protection component from Ningbo Longerfa Hydraulic Co., Ltd.—a professional hydraulic parts manufacturer in Ningbo, China, specializing in cartridge valves, pressure control valves and heavy-duty excavator hydraulic accessories.
Longerfa holds ISO9001/ISO45001 certifications and patents, with advanced CNC precision machining centers and excavator-specific pressure testing platforms. Every XJBN-00163 main relief valve undergoes 100% pressure calibration testing and 24-hour leak-proof verification, fully complying with industry standards and the strict hydraulic system parameters of SK230-6E excavators. This ensures it perfectly matches the original equipment's pressure control logic and operating requirements.
As the "hydraulic safety core" of SK230-6E, this main relief valve monitors the system’s overall pressure in real time: during high-intensity operations such as deep digging, heavy lifting or rock breaking, if the pressure exceeds the preset safety threshold, it automatically opens to discharge excess hydraulic oil. This effectively prevents damage to core components like the main hydraulic pump, multi-way control valve, boom cylinders and swing motor caused by overpressure. It adopts a dual-layer wear-resistant valve seat (surface treated with chromium plating) and a high-fatigue-resistance pressure regulating spring, ensuring stable pressure control accuracy even after 10,000+ cycles of operation. Adhering to SK230-6E original specs for direct bolt-on replacement, it eliminates the need for complex system pressure debugging during maintenance—reducing equipment downtime by 30% on average. Trusted by global aftermarket users, it’s widely applied in large-scale construction, mining, infrastructure construction and port loading/unloading projects where SK230-6E excavators are the main operation equipment.
Adhering to "Quality First, Service First," Longerfa provides a dependable choice for aftermarket maintenance and replacement of SK230-6E excavator hydraulic systems equipped with the XJBN-00163 main relief valve. It ensures the hydraulic system maintains consistent pressure output, avoids unexpected shutdowns due to pressure abnormalities, and supports long-term safe, efficient operation of the excavator in harsh working environments.
