Start with the circuit function

Define what the actuator must do: extend, retract, stop, float or hold position. The spool symbol must match the required neutral and working positions.

Confirm pressure and flow

Check maximum system pressure, expected working flow and pressure drop. A valve selected only by port size can create excess heat or slow machine response.

Verify actuation and electrical data

For solenoid valves, specify coil voltage, frequency, connector and manual override. For pilot-operated valves, confirm pilot and drain arrangements.

Send complete application information

Include the existing model, hydraulic diagram, mounting interface and duty cycle whenever possible. JIUDING can use these details to review the relevant series and configuration.