Overview
The Belimo B239+AFRX24-MFT-S is a 1-1/2-inch 2-way characterized control ball valve combination featuring a spring return MFT actuator and dual auxiliary switches for versatile modulation and position signaling.
Features
- Programmable MFT technology allows field selection of control input and feedback
- Dual SPDT auxiliary switches provide limit status feedback or interlock function
- Mechanical spring return ensures reliable fail-safe positioning during power failure
- Durable stainless steel trim maintains tight seal integrity over time
- Equal percentage flow profile ensures smooth, consistent thermal output
Specifications
- Valve Size: 1-1/2 inch NPT
- Valve Type: 2-Way Characterized Control Ball Valve
- Flow Coefficient: Cv 29
- Control Signal: Multi-Function Technology (2-10 V, 4-20 mA, On/Off, Floating)
- Auxiliary Switches: 2x SPDT
- Supply Voltage: AC/DC 24 V
Applications
- Hot and chilled water coil control in commercial HVAC systems
- Two-way hydronic flow control requiring auxiliary position feedback
- Energy management systems requiring customizable, fail-safe operation





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