What is Valve Actuator ?

Introduction to Valve Actuators

What is it?

Valve actuators are devices that control the movement and position of valves in heating, ventilation, and air conditioning (HVAC) systems. They can be used to regulate the flow of fluids such as water or steam in different zones or areas of a building.

Why we use it?

We use valve actuators to improve system performance, optimize energy usage, and ensure safety by controlling the flow of fluids in HVAC systems.

How it works?

The actuator typically contains an electric or pneumatic motor, which rotates a shaft to move the valve into a desired position based on signals received from the building automation system or controller.

Major brands that manufacture it

Some of the major brands that manufacture valve actuators include Belimo, Honeywell, Johnson Controls, and Siemens.


There are different types of valve actuators, including electric and pneumatic models, with various torque ratings and travel angles to fit different applications. Some models may also feature additional functions, such as feedback sensors or communication protocols.

How do we select it?

When selecting a valve actuator, consider factors such as torque rating, travel angle, power supply requirements, compatibility with the valve assembly, and communication protocols. Also, make sure the actuator is compatible with your existing control and automation systems.

How to install it?

Valve actuators should be installed on the valve assembly according to the manufacturer's recommendations. They should be securely mounted using appropriate fittings or adapters, and any necessary wiring connections should be made to the building automation system or controller.

Wire connections required to receive the signals

The wire connections required to receive the signals from a valve actuator may vary depending on the specific device and building automation system. Typically, they will require a power supply connection and a communication signal wire that connects to the building automation system or controller. It's important to refer to the manufacturer's installation instructions for proper wiring connections.

in MEP
What is Valve Actuator ?
Administrator December 22, 2023
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