Shanghai synchronous hydraulic pump station manufacturers/suppliers have five control modes for directional valves: manual, motorized, electric, hydraulic, and electro-hydraulic. The opening of a directional valve refers to the number of oil ports on the valve body, and the number of ports is called a multi port valve.

The position of a directional valve refers to the number of connection forms that can be obtained when the mutual position between the valve core and the valve body of the directional valve changes. There are several connection forms called several position valves.

If a directional valve has 4 oil ports, 3 connection forms, and is electric, then the full name of the valve is a three position four-way electromagnetic (electric) directional valve. Shanghai Synchronous Hydraulic Pump Station Manufacturer and Supplier