This actuation component is used in dosing valves and injectors to convert electrical control signals into mechanical motion. It operates on either electromagnetic (solenoid) or piezoelectric principles, generating linear or rotary movement that opens, closes, or modulates fluid flow. The actuator is the primary mechanism for achieving precise metering of liquids or gases in industrial applications, such as fuel injection, chemical dosing, and process control. Solenoid versions use a coil that, when energized, creates a magnetic field to move a ferromagnetic plunger. Piezoelectric versions rely on the inverse piezoelectric effect, where an applied voltage causes dimensional changes in piezoelectric ceramics, producing precise displacement. Both types provide fast response and high repeatability, essential for accurate dosing. The component is typically housed in stainless steel (316L) and includes electrical steel laminations and copper wire for the solenoid coil, or piezoelectric ceramics (PZT) for the piezoelectric version. Key parameters include operating pressure (1.0–1.6 MPa), stroke length (0.5–2.0 mm), response time (1–5 ms), positioning accuracy (±0.05 mm), supply voltage (24 V DC ±10%), power consumption (5–15 W), operating temperature (-40 to 85 °C), ingress protection (IP54–IP65 per IEC 60529), and weight (0.5–2.5 kg). These values are reference ranges and must be verified for the specific model and application. The actuator interfaces with a valve body or injector assembly, and its mounting design depends on the weight and stroke requirements. When selecting, consider the required flow capacity, response time, and environmental conditions. Always confirm model-specific specifications and applicable standards with the legal manufacturer or supplier before procurement.
Solenoid actuators operate by energizing a coil to create a magnetic field that moves a ferromagnetic plunger. Piezoelectric actuators use the inverse piezoelectric effect where applied voltage causes dimensional changes in piezoelectric materials, generating precise displacement. Both convert electrical input into mechanical output to actuate valve mechanisms.
