What Is an Actuator and What Does It Do?

DN indicates the valve diameter, and PN indicates the pressure rating. For the correct selection, DN/PN should be evaluated together according to the line diameter and operating pressure. [Detailed content]

What Is the Difference Between an Electric and a Pneumatic Actuator?

Ball valves are preferred for on/off applications; butterfly valves are advantageous for large diameters and when rapid on/off is required. The choice is made according to the line diameter, pressure, and intended use. [Detailed content]

What Is an On/Off Actuator?

An on/off actuator moves a valve to either the fully open or fully closed position. It is used in lines where flow only needs to be started or stopped, and is common in ball- and butterfly-valve automation.

What Does a Modulating Actuator Do?

A modulating actuator positions a valve at specific opening levels instead of only fully opening or closing it. Modulating actuators using a 4–20 mA or 2–10 V control signal are used where flow, pressure, temperature, or process control is required.

Which Systems Use a 4–20 mA Modulating Electric Actuator?

Globe valves are preferred in lines requiring flow rate adjustment/precise control (for control purposes). For simple on/off operation, a ball/butterfly valve is generally sufficient. [Detailed content]

Where Are 220 V AC Electric Actuators Used?

220 V AC electric actuators are used in valve automation systems powered by mains electricity. They are common in building services, water lines, HVAC systems, fire protection lines, and industrial on/off applications.

Which Applications Are Suitable for a 24 V DC Electric Actuator?

24 V DC electric actuators provide safe, controlled operation in low-voltage automation systems. They are suitable for PLC-controlled systems, automation panels, machinery, and process lines requiring low voltage.

What Is a Single-Acting Pneumatic Actuator?

A single-acting pneumatic actuator moves in one direction using compressed air and returns to its original position with a spring. It is preferred when a valve must return to a safe position if the air supply is interrupted, making it useful in safety-focused applications.

What Is a Double-Acting Pneumatic Actuator?

A double-acting pneumatic actuator uses compressed air for both opening and closing. Without a spring-return mechanism, it provides controlled movement in both directions using the air supply. It is commonly used in industrial lines that cycle frequently.

Limit switch box ne işe yarar?

Limit switch box, aktüatörlü vananın açık veya kapalı konum bilgisini otomasyon sistemine ileten aksesuardır. Operatör, pano veya PLC üzerinden vananın hangi konumda olduğunu takip edebilir. Özellikle uzaktan izleme ve proses güvenliği açısından önemlidir.

What Does a Positioner Do?

A positioner accurately sets a control valve to the required opening. In systems requiring modulating control, it interprets the actuator signal and helps the valve maintain the correct position. It is an important automation component in lines where flow and pressure are controlled.

What Is an I/P Converter?

An I/P converter turns an electrical control signal into a pneumatic signal. It typically converts a 4–20 mA electrical signal into a pneumatic output for controlling a pneumatic actuator or positioner.

What Should You Consider When Choosing an Actuator?

When selecting an actuator, consider valve type and size, operating pressure, torque requirements, supply voltage, control type, environmental conditions, and compatibility with the automation system. An incorrectly selected actuator may not provide enough force to turn the valve or may cause unstable system operation.