072-560A is a high precision hydraulic overflow pressure control valve. It is mainly used for system pressure setting, overload protection and pressure relief in various hydraulic circuits. It is widely used in construction machinery, industrial equipment, lifting machinery and mobile hydraulic systems to keep system pressure stable and protect hydraulic parts from overpressure damage.

Working medium: Mineral based hydraulic oilOil cleanliness: Meet ISO 4406 standardRated working pressure: 21 MPaMaximum impact pressure: 26 MPaApplicable fluid viscosity: 15-68 mm²/sWorking temperature range: -20℃ ~ +80℃Adjustment mode: Manual stepless pressure regulationInternal leakage: Low leakageInstallation method: Standard flange type installationApplicable condition: Suitable for frequent start and continuous operation

Adopt precision spool matching structure with accurate pressure control and stable pressure maintaining performance. High strength wear-resistant parts ensure long service life under frequent working conditions. Smooth inner flow channel effectively reduces pressure loss and improves hydraulic working efficiency. Good overall sealing performance avoids external oil leakage effectively. Strong anti-vibration and anti-impact ability, adaptable to complex working sites. Simple adjustment structure, easy on-site debugging and operation. Compact and reasonable structure, easy installation and convenient later maintenance.

Clean the installation surface and oil passages thoroughly before installation to remove iron scraps, dirt and impurities. Fix the valve body steadily with standard bolts and tighten according to specified torque, avoid over tightening to prevent deformation and jamming. Connect oil inlet and return oil pipelines strictly according to flow direction marks. Recheck all connection positions to ensure firm installation and no loose joints after installation.

After installation is completed, perform no-load test operation first. Slowly inject hydraulic oil and check all connection parts for oil leakage. Adjust the set pressure to the required working value slowly according to actual equipment needs. Keep the hydraulic oil clean during daily use, replace filter elements regularly to prevent internal blockage. It is forbidden to set pressure beyond the maximum allowable limit. Fully release the residual pressure inside the hydraulic system before equipment shutdown and maintenance.

Regularly check the valve appearance and joint position for oil seepage, replace worn sealing parts in time. Periodically inspect pressure stability and calibrate pressure value if deviation exists. Keep the valve outer surface clean to prevent dust and oil dirt accumulation. It is prohibited to disassemble the valve privately without professional permission, so as not to damage internal precision components and affect control accuracy.

All installation, pressure adjustment and maintenance work must be carried out after equipment stops running, power is cut off and all hydraulic pressure is released completely, to prevent injury accidents caused by high-pressure oil liquid. Operators shall strictly abide by safe operating regulations. Keep the product away from high temperature heat sources and corrosive substances. Once abnormal noise, overheating and unstable pressure occur during operation, stop using immediately and arrange professional inspection and troubleshooting.