Belimo B309+LF24-S Brass Ball Valve with On/Off Actuator - 1/2 3-Way 24V

The Belimo B309+LF24-S is a compact control valve assembly combining a 1/2" NPT 3-way brass ball valve with an LF24-S spring return electric actuator. This valve package is designed for hydronic HVAC applications requiring reliable on/off control of hot or chilled water in mixing or diverting configurations.

Key Specifications:

• Connection size: 1/2" NPT threaded female connections
• Flow coefficient (Cv): 0.8
• Valve type: 3-way brass ball valve
• Actuator voltage: 24V AC/DC
• Control type: On/Off (2-position)
• Spring return mechanism for fail-safe positioning
• Auxiliary switch included for status feedback
• Lead-free construction compliant with drinking water standards

Features and Benefits:

• Compact integrated design reduces installation time and leak points
• Spring return ensures valve returns to safe position on power loss
• Durable brass body construction for long service life
• Auxiliary switch provides valve position confirmation for building automation systems
• Lead-free materials suitable for potable water applications
• Universal 24V power supply compatibility (AC or DC)

Ideal for small commercial and residential HVAC systems, fan coil units, unit heaters, and other applications requiring compact, reliable hydronic control. The spring return feature makes this valve particularly suitable for safety-critical applications where a predictable fail-safe position is required.