Construction machinery relief valve series
0102030405
R215-7 Relief Valve 31N8-17430 AV280
R215-7 Relief Valve 31N8-17430 AV280
R215-7 Relief Valve 31N8-17430
Suitable for R215-7 series excavators and other compatible equipment (part no.: 31N8-17430), this relief valve is a core hydraulic safety component from Ningbo Longerfa Hydraulic Co., Ltd.—a professional manufacturer of excavator-compatible hydraulic parts (pressure control valves, cartridge 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 systems of R215-7 and other applicable devices.
As a key "pressure protector" of the hydraulic circuit, it monitors real-time pressure. When overpressure occurs (e.g., heavy lifting, hard soil excavation), it releases excess oil promptly to protect hydraulic pumps, cylinders, and control valves from damage.
The valve features 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 infrastructure projects.
Longerfa’s 31N8-17430 valve ensures stable pressure control for R215-7 and other compatible equipment, working reliably in harsh environments.
