Overview
The Belimo B223+LF24 US is a 2-way fail-safe characterized control ball valve assembly designed for HVAC hydronic applications. It combines a 1-inch NPT valve with a spring return 24V actuator to ensure positive safety closing upon power loss.
Features
- Mechanical spring return fail-safe mechanism returns valve to safe position during power failure
- Equal percentage flow profile for smooth, linear heat transfer control
- High close-off pressure rating prevents leakage across the valve
- Low power consumption in holding state
- Manual crank handle included for manual operation during installation
Specifications
- Valve Size: 1 inch NPT
- Valve Type: 2-Way Characterized Control Ball Valve
- Control Signal: On/Off
- Supply Voltage: AC/DC 24 V
- Fail-Safe Mode: Spring Return
Applications
- Fail-safe control of hot or chilled water coils in HVAC systems
- Air handlers and hydronic heating/cooling loops
- Critical building automation and climate control systems



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