Overview
The Belimo B209+LF24-MFT US pairs a 1/2″ 2-way characterized control valve with a spring-return MFT actuator. It is optimized for low-to-medium flow hydronic loops requiring configurable control signals and fail-safe reliability.
Features
- Multi-Function Technology (MFT) allows custom control, scaling, and feedback setup
- Mechanical spring-return fail-safe protection during power loss
- Stainless steel trim and ball for durability against fluid erosion
- Characterized port provides linear heat transfer performance
Specifications
- Valve Size: 1/2″ NPT
- Flow Coefficient (Cv): 0.8
- Nominal Voltage: AC/DC 24 V
- Control Signal: 2-10 V (MFT/programmable)
- Torque: 35 in-lb [4 Nm]
Applications
- Air handling units, fan coils, and unit ventilators
- Hot and chilled water hydronic control up to 60% glycol
- Variable flow heating and cooling circuits




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