This is a professional high-precision hydraulic control valve, designed for medium and high pressure hydraulic systems. It is widely used in engineering machinery, industrial equipment, lifting machinery and hydraulic power units, mainly for oil circuit control, flow adjustment and system stable pressure maintenance, with reliable performance and long service life.

Working medium: Industrial mineral hydraulic oilFluid cleanliness standard: ISO 4406Rated working pressure: 21 MPaMax allowable pressure: 26 MPaApplicable oil viscosity: 15 ~ 68 mm²/sWorking temperature: -20℃ ~ +80℃Control mode: Mechanical automatic controlInternal leakage: Ultra-low leakageConnection form: Standard pipe thread connectionApplicable condition: Continuous stable heavy-load operation

High-strength integral valve body, excellent compression resistance and impact resistance.Precision matching internal components, smooth movement without clamping stagnation.Optimized flow passage design, small flow loss and high working efficiency.Multi-layer combined sealing structure, good anti-leakage effect under long-term pressure.Strong environmental adaptability and vibration resistance, suitable for complex working sites.Standard general structure, easy installation, replacement and field debugging.Simple internal structure, low failure rate and convenient daily maintenance.

Clean all oil ports and internal oil passages to remove iron scraps and dirt before installation.Install the valve at the designated position and tighten the thread interface with standard torque, avoid over-tightening causing crack and deformation.Connect hydraulic pipelines strictly according to system oil circuit direction.Check the assembly tightness and interface sealing performance after installation is completed.

Carry out low-pressure no-load test firstly after installation, check all sealing positions for oil leakage.Gradually increase working pressure to reach actual use requirement.Keep hydraulic oil clean during operation, replace filter elements regularly to avoid impurity blockage.It is forbidden to exceed the maximum rated pressure for overload use.Completely release system residual pressure before equipment stop and maintenance.

Regularly check thread joints and sealing parts for oil seepage, replace aging seals timely.Periodically inspect operating sensitivity and working stability, adjust properly if abnormal.Keep valve surface clean to prevent dust and oil dirt accumulation.Non-professional disassembly is prohibited to avoid damage to precision matching parts.

All installation, adjustment and maintenance work must be carried out after equipment shutdown, power cut and full hydraulic pressure relief, to prevent personal injury caused by high-pressure hydraulic oil.Operate in accordance with relevant safety operation specifications.Keep away from high temperature heat source and corrosive medium.Stop using immediately once abnormal noise, pressure fluctuation and oil leakage occur, and arrange professional inspection and repair in time.