HVAC Valve Actuators

Linear Valve Actuators

A linear valve actuator is an electric drive that moves the stem of a stroke (globe type) control valve up and down to open, close or position it proportionally.

It is used on fan coil, air handling unit, heat exchanger and heating circuit valves. The product range includes 300–800 N linear actuators, balancing valve actuators and electrothermal on-off actuators.

300 – 800 Nforce (depending on model)

20 mmstroke up to

0–10 Vmodulating control (depending on model)

IP54protection (linear actuator)

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Main Applications

Fan coil valves
AHU heating-cooling valves
Heat exchanger control valves
Heating circuit mixing valves
Balancing valve control
Underfloor heating manifold valves

Technical Data

Types	Linear (stroke) actuator, electrothermal actuator
Linear actuator force	300 N … 800 N (depending on model)
Stroke	Up to 20 mm
Supply	AC 230 V · AC/DC 24 V
Control signal	3-point · 0–10 V · 4–20 mA · Modbus RTU (depending on model)
Running time	3-point 120 s or 30 s · modulating 30 s
Protection / ambient	IP54 / −5 … +55 °C
Fluid temperature	−25 … +130 °C
Electrothermal actuator	100 N, NC or NO, two-position
Electrothermal power	2.5 W (24 V model)

Material Options

Part	Linear actuator · AC 230 V	Linear actuator · AC/DC 24 V	Electrothermal actuator
Control	3-point	0–10 V / 4–20 mA	Two-position on-off
Force / stroke	800 N / 20 mm	800 N / 20 mm	100 N / max. 4.5 mm
Running time	120 s or 30 s	30 s	About 270 s
Protection	IP54	IP54	Depending on model

Which material? Values come from the parent category manufacturer data. Actuator force must be chosen to meet the valve close-off pressure, and the actuator–valve adaptor fit must be checked.

Advantages

Precise Control

Proportional positioning

Wide Signal Choice

3-point, 0–10 V, 4–20 mA

Quiet On-Off

Electrothermal type

Durable

IP54 housing

Construction and Design Features

Motor and gear mechanism
Connection to valve neck
Position indicator
Manual override (depending on model)

Send the valve type and size, control signal and supply; we will confirm a suitable linear valve actuator from stock.

How to Choose?

Define the valveDetermine valve type, size and stroke.
Calculate the forceChoose the force needed for the differential pressure.
Choose the signalOn-off, 3-point or 0–10 V.
Supply and adaptorCheck 230 V or 24 V and connection fit.

Complementary Products

Proportional Control Valves Thermostatic Control Valves Electric Actuators Heat Exchangers Heating Manifolds Circulation Pumps

Why ORFA?

Since 1985Over 40 years of experience in supplying industrial piping equipment.

Technical ConsultancyTechnical support on actuator–valve compatibility and force selection.

Delivery from StockLinear and electrothermal valve actuators are shipped from stock.

Compatibility CheckChecked together with Proportional Control Valves for valve body fit.

In This Group

Other HVAC Valve Actuators

HVAC Damper Actuators

HVAC damper actuators are electric drives that open and close dampers in ventilation ducts to control air flow.

Details →

Rotary Valve Actuators

Rotary valve actuators open, close or modulate ball and butterfly type HVAC valves with rotary movement.