Construction machinery relief valve series
0102030405
EX200-1 Main Relief Valve 4242176
EX200-1 Main Relief Valve 4242176
EX200-1 Main Relief Valve 4242176
Fit for EX200-1 excavators, this main relief valve (part number: 4242176) is a reliable and durable hydraulic component from Ningbo Longerfa Hydraulic Co., Ltd.—a professional manufacturer of hydraulic cartridge valves, valve blocks, and precision hydraulic parts, located at No. 18 Xingye East Road, Xiepu Town, Zhenhai District, Ningbo, Zhejiang, China.
Certified by ISO9001 and ISO45001, Longerfa holds multiple national invention and utility model patents, and is recognized as a 2023 Zhenhai District Enterprise Technology R&D Center. Equipped with imported precision CNC machining equipment and advanced hydraulic testing tools (including pressure calibration instruments and durability test platforms), the company ensures consistent manufacturing accuracy and stable performance for every 4242176 main relief valve. Every product undergoes 100% performance verification, covering pressure setting precision, overflow flow stability, and long-term high-pressure resistance, with samples passing strict life cycle tests that meet or exceed industry requirements.
This 4242176 main relief valve adopts a heavy-duty cast steel body, a wear-resistant alloy valve core, and a high-sealing performance gasket—effectively providing precise overpressure protection for the EX200-1 excavator’s hydraulic system. It can quickly respond to pressure fluctuations, avoid damage to hydraulic pumps, cylinders, and other core components caused by excessive pressure, and ensure smooth operation of the excavator’s lifting, digging, and rotating functions. Its structure fully conforms to the original specifications of the EX200-1, enabling direct replacement without modifying the installation interface, which greatly shortens aftermarket maintenance time. Focused on the aftermarket, Longerfa’s hydraulic parts are trusted by global excavator maintenance service providers and equipment owners, widely used in construction, mining, and municipal engineering fields.
Upholding the principle of "Quality First, Service First," Longerfa continuously upgrades the production technology and quality control system for excavator-specific main relief valves. It is a trusted choice for high-quality hydraulic components in EX200-1 excavator aftermarket maintenance and replacement needs.
