Overview
The Belimo B217+LRB24-3 is a 3/4″ 2-way characterized control valve paired with a non-spring return actuator. It is designed for on/off or floating point control of hydronic systems where fail-safe action is not required.
Features
- Non-spring return design for cost-effective floating or 3-point control
- Low power consumption during operation and standstill
- Characterized disc provides equal percentage flow for stable control
- Direct-coupled installation with manual override capability
Specifications
- Valve Size: 3/4″ NPT
- Flow Coefficient (Cv): 4.7
- Nominal Voltage: AC/DC 24 V
- Control Signal: Floating Point, On/Off (3-point)
- Torque: 45 in-lb [5 Nm]
Applications
- Non-fail-safe hot and chilled water coil control
- Fan coil units, unit ventilators, and reheat circuits
- Constant or variable flow hydronic systems


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