Belimo B317B+LF24-SR 3/4" 3-Way Control Valve with Actuator 4.7 Cv 24V

The Belimo B317B+LF24-SR is a complete control valve assembly combining a 3/4-inch 3-way brass valve body with an LF24-SR spring return actuator. This compact unit is designed for precise control of heating, cooling, and mixing applications in HVAC systems.

Key Specifications:

• Valve size: 3/4 inch (20 mm) NPT threaded connections
• Valve configuration: 3-way mixing/diverting
• Flow coefficient (Cv): 4.7
• Actuator voltage: 24V AC/DC
• Control signal: 2-10 VDC modulating
• Spring return function for fail-safe operation
• Close-off pressure rating suitable for most hydronic applications

Features:

• Integrated actuator and valve assembly for easy installation
• Spring return mechanism returns valve to default position on power loss
• Low power consumption with energy-efficient actuator design
• Durable brass construction for long service life
• Precise 2-10 VDC modulating control for optimal temperature regulation
• Compact footprint ideal for space-constrained mechanical rooms

This valve assembly is commonly used in fan coil units, unit heaters, small air handlers, radiant heating systems, and other hydronic applications requiring precise flow control. The spring return feature ensures the valve returns to a safe position during power interruptions, making it ideal for critical temperature control applications.