Belimo AFRX24-MFT 24V Spring Return Modulating Valve Actuator 180 lb-in MFT

Description

The Belimo AFRX24-MFT is a spring-return multifunctional valve actuator designed for modulating control of hydronic heating and cooling systems in commercial HVAC applications. Belimo part number AFRX24-MFT operates on 24 VAC/DC power, delivers 180 lb-in of torque, and features programmable Multi-Function Technology (MFT) for flexible control and position feedback. Its spring-return mechanism provides automatic fail-safe positioning during power interruptions, making it suitable for air handling units, fan coil systems, and variable-flow hydronic applications.

Technical Specifications

Information About AFRX24-MFT

The AFRX24-MFT is part of Belimo's AFR Series of spring-return electric actuators, engineered for operation with compatible B6 Series two-way flanged ball valves. Its electromechanical construction combines a high-torque motor drive, spring-return mechanism, and programmable MFT electronics to support multiple control strategies within building automation systems. The actuator supports configurable analog voltage, pulse-width modulation, floating-point, and on/off control functions, with adjustable position feedback, operating time, and mechanical working range. Designed for heating and cooling coils, unit ventilators, VAV reheat applications, and hydronic bypass loops, the unit provides modulating valve control with automatic spring-return operation when electrical power is removed.

Key Features:

• 180 lb-in Torque Output: Provides high-torque rotary actuation for compatible Belimo hydronic control valves.

• Spring-Return Fail-Safe: Automatically returns the valve toward its mechanical fail-safe position when electrical power is interrupted.

• 24 VAC/DC Operation: Supports 24 VAC at 50/60 Hz and 24 VDC power supplies for building automation installations.

• Multi-Function Technology: Programmable MFT electronics support multiple control input and feedback configurations.

• Modulating Control: Provides adjustable valve positioning for proportional heating and cooling flow regulation.

• Multiple Control Modes: Supports configurable voltage, PWM, floating-point, and on/off control strategies.

• Adjustable Motor Running Time: Factory-default 150-second operation with programmable adjustment from 70 to 220 seconds.

• Rapid Spring Return: Provides approximately 20-second spring-return operation under specified temperature conditions.

• Programmable Position Feedback: Supports configurable output signals for monitoring actuator position.

• B6 Series Valve Compatibility: Designed for use with compatible Belimo two-way flanged ball valve assemblies.

• Wide Operating Temperature Range: Supports ambient temperatures from -22°F to +122°F.

• Configurable Diagnostics: Allows adjustment and monitoring of actuator position, running time, operating range, address, and status through compatible configuration tools.

The AFRX24-MFT delivers the reliability and precision required for modulating hydronic valve control, automatic fail-safe operation, and commercial HVAC building automation systems.

Get fast quote and compatibility check

Compatibility check available   ·   Alternative parts suggested

Send Request

Get a response to your request within 5 minutes

Talk to a real industrial automation specialist.
We verify compatibility, suggest alternatives, and provide fast quotes.

Something went wrong, please try again

Arty A.

Senior Sales Manager

Daniel S.

Parts Specialist

Request successfully sent!

Estimated response time: 1 to 5 minutes.