Precautions for use and maintenance of electromagnetic reversing valve

1.According to the principle that the installation and connection methods of various hydraulic valvesin the entire hydraulic system should be coordinated, select the appropriate installation and connection method.

2.Choose the appropriate diameter of the reversing valve according to the flow rate to be controlled. If the diameter of the valve is greater than 10mm, a hydraulic directional valve or an electro-hydraulic directional valve should be selected. Do not exceed the rated pressure and flow limit specified in the manufacturer's catalog when using it, so as not to cause malfunction.

3.According to the working requirements of the hydraulic system, select the appropriate slide valve function and centering method.

4.According to the requirements of the degree of automation and the working environment of the main engine, select the appropriate reversing valve control method. For example, in the hydraulic system of industrial equipment, because the working site is fixed and there is a stable power supply, electromagnetic directional valve or electro-hydraulic directional valve is usually used; for hydraulic equipment systems working in the field, because the main engine often needs to change the working site and there is no Electric power supply, so it is necessary to consider the selection of manual reversing valve; another example is the hydraulic equipment system working in harsh environments (such as humidity, high temperature, high pressure, corrosive gas, etc.), in order to ensure the safety of people and equipment, you can consider selecting Pneumatically controlled hydraulic directional valve.

5.The pressure of the oil return port T cannot exceed the specified allowable value.

6.For the electromagnetic reversing valve, the appropriate electromagnet should be selected according to the power supply used, service life, switching frequency, safety characteristics, etc.

7.The hydraulic directional valve and electro-hydraulic directional valve should choose the appropriate pilot control oil supply and oil discharge method according to the needs of the system, and determine whether the selected valve has damping adjustment according to the working performance requirements of the main engine and the hydraulic system. device or stroke adjustment device, etc.

8.The two electromagnets of the double electromagnet solenoid valve cannot be energized at the same time. When designing the electric control system of hydraulic equipment, the actions of the two electromagnets should be interlocked.

9. When the electro-hydraulic directional valve and the hydraulic directional valve are internally supplied with oil, for those three-position four-way electro-hydraulic directional valves whose intermediate positions unload the main oil circuit, such as slide valve functions such as M, H, and K, the Take measures to ensure the minimum control pressure at the neutral position, such as installing a back pressure valve on the oil return port.