Overview
The Belimo B339+AFRX24-MFT is a 1-1/2-inch 3-way characterized control ball valve assembly paired with a programmable spring return actuator. It provides accurate modulating hydronic control for heating and cooling applications in HVAC systems.
Features
- Multi-Function Technology allows field customization of operating parameters
- Spring return fail-safe action returns valve to safe position upon power loss
- Durable stainless steel ball and stem trim resist erosion and scaling
- Equal percentage flow profile prevents rapid temperature fluctuations
- Maintenance-free design with low operational torque requirements
Specifications
- Valve Size: 1-1/2 inch NPT
- Valve Type: 3-Way Characterized Control Valve
- Flow Coefficient: Cv 29
- Control Signal: Multi-Function Technology (2-10 V, 4-20 mA, On/Off, Floating)
- Supply Voltage: AC/DC 24 V
- Fail-Safe Mode: Spring Return
Applications
- Hydronic coil control in commercial air handling systems
- 3-way mixing and diverting applications in heating and cooling loops
- Building automation systems requiring programmable valve actuators


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