Construction machinery relief valve series
0102030405
PC120-6 Unloading Valve 723-50-55100
Unloading Relief Valve 723-50-55100 fit for Komatsu Excavator PC120-6
Unloading Relief Valve 723-50-55100 fit for Komatsu Excavator PC120-6
Suitable for Komatsu PC120-6 excavators and other compatible models (part no.: 723-50-55100), this unloading relief valve is a core hydraulic safety component from Ningbo Longerfa Hydraulic Co., Ltd.—a professional manufacturer of Komatsu-compatible hydraulic parts (pressure control valves, unloading valves, etc.).
Longerfa holds ISO9001/ISO45001 certifications and relevant patents. Each valve undergoes strict quality testing, complying with original equipment standards to match the hydraulic system of Komatsu PC120-6 and other applicable devices.
As a key "unloading & pressure protector" of the hydraulic circuit, it monitors real-time pressure. When the system needs unloading or overpressure occurs (e.g., idle operation, heavy digging), it releases excess oil promptly to protect hydraulic pumps, cylinders, and control valves from damage.
The valve has a wear-resistant valve core and corrosion-resistant body. It supports direct bolt-on replacement (no system debugging) to reduce maintenance time. Widely used in construction, mining, and earthmoving projects.
Longerfa’s 723-50-55100 valve ensures stable unloading and pressure control for Komatsu PC120-6 and compatible equipment, working reliably in harsh environments.