Construction machinery relief valve series
0102030405
M4 Pilot relief valve
M4 Pilot relief valve
M4 Pilot Relief Valve
This M4 Pilot Relief Valve is suitable for hydraulic pilot control systems of construction machinery (e.g., excavators, loaders) and industrial equipment, produced by Ningbo Longerfa Hydraulic Co., Ltd.—a professional manufacturer of hydraulic pilot valves, pressure control valves, and related parts.
Longerfa holds ISO9001 and ISO45001 certifications, with relevant patents for hydraulic pilot valve technology. Each M4 Pilot Relief Valve undergoes strict quality testing, meeting industry and original equipment standards to ensure compatibility with applicable pilot control systems.
As a core component of hydraulic pilot circuits, its main function is to regulate and protect pilot pressure. It prevents excessive pilot pressure (caused by system fluctuations or overload) from damaging precision pilot components (e.g., pilot pumps, control valves), ensuring stable operation of the main hydraulic system.
The valve adopts a wear-resistant pilot spool and corrosion-resistant valve body. It supports direct replacement according to installation specifications, without the need for complex system debugging, helping reduce maintenance time. It is commonly used in construction, mining, and industrial production scenarios.
Longerfa’s M4 Pilot Relief Valve ensures reliable pilot pressure control for applicable equipment and works stably in harsh operating environments (e.g., dust, vibration, temperature variations).
