Construction machinery relief valve series
0102030405
R210W-7 Travel Valve 410127-00356A 31NG-00257
R210W-7 Travel Valve 410127-00356A 31NG-00257
R210W-7 Travel Valve 410127-00356A 31NG-00257
Exclusive to R210W-7 wheeled excavators (part nos.: 410127-00356A, 31NG-00257), this travel valve is a core hydraulic control component for aftermarket maintenance, produced by Ningbo Longerfa Hydraulic Co., Ltd.—a professional manufacturer of excavator-compatible hydraulic parts (travel valves, control valves, etc.).
Longerfa holds ISO9001/ISO45001 certifications and patents for excavator hydraulic parts. Each travel valve undergoes 100% flow calibration (±2% precision) and 48-hour leak-proof testing, fully complying with original equipment standards to match R210W-7’s travel system.
As the key control part for R210W-7’s wheeled travel (adapting to road driving, site shifting), it regulates oil flow to adjust travel speed and direction. It prevents pressure spikes during start/stop, protecting travel motors, wheel hubs, and pipelines from damage.
The valve uses high-wear-resistant alloy spool (surface nitriding) and sealed valve body for dust/water resistance. It supports direct bolt-on replacement (no system adjustment), cutting maintenance time by ~35%. Widely used in road construction, municipal engineering, and logistics yards.
Longerfa’s travel valve ensures stable travel control for R210W-7, resisting vibration and working reliably in harsh environments (-20℃ to 65℃, dusty conditions).
