The Caleffi 145018 is an electronic proportional linear actuator: 24 VAC/VDC electronic linear actuator with proportional or two-point control and fail-safe function. It modulates valve position from a control signal rather than switching open and closed.
Best for modulating control where a proportional signal drives valve position.
Specifications sourced from Caleffi North America technical literature. Last reviewed July 2026.
Key Features
Proportional Electronic Actuation
A motor-driven linear actuator positioned by a control signal: 24 VAC/VDC electronic linear actuator with proportional or two-point control and fail-safe function. It modulates valve position rather than switching fully open or closed.
Position Feedback
A feedback signal reports actual stem position back to the controller, so the control loop can verify the commanded position was reached.
Selectable Fail-Safe
Fail-safe behavior is selectable, determining whether the valve drives closed or open on loss of control signal or power.
Technical Specifications
| Product Type | Electronic Proportional Linear Actuator |
| Ambient temperature range | 32 to 122 °F (0 to 50 °C) |
| Control signal | 0 (2)-10 V, 2 point |
| Protection class | IP 54 |
| Supply cable length | 1.5 m |
| Feedback signal | 0-10 V |
Documentation
Related Products
Frequently Asked Questions
What does Caleffi 145018 do?
It is an electronic proportional linear actuator: 24 VAC/VDC electronic linear actuator with proportional or two-point control and fail-safe function. It modulates the valve rather than simply opening or closing it.
Is Caleffi 145018 a thermo-electric actuator?
No. A thermo-electric actuator uses a heated wax element and switches between open and closed. This is a motor-driven electronic actuator that positions the valve proportionally from a control signal and reports position back.
What is the warranty on Caleffi 145018?
Caleffi covers this product under its standard two-year limited warranty against defects in material and workmanship from the date of shipment. ZOT Supply is an authorized Caleffi distributor.
- Product Type:
- Electronic Proportional Linear Actuator
- Product Family:
- Pressure Independent Control Valves (PICV)
- Fail Position:
- Fail-Safe Selectable