Belimo B313+LF24-SR 1/2 Inch 3-Way Control Valve with Spring Return Actuator

The Belimo B313+LF24-SR is a compact 3-way characterized control valve (CCV) assembly designed for HVAC mixing and diverting applications. This pre-assembled valve and actuator package combines a 1/2 inch bronze ball valve body with a 24V spring return electric actuator for reliable, maintenance-free operation.

Valve Specifications:

• Valve size: 1/2 inch threaded NPT connections
• Valve type: 3-way characterized control valve for mixing or diverting service
• Flow coefficient (Cv): 4.7
• Valve body material: Bronze construction for durability
• Close-off pressure rating suitable for commercial HVAC systems

Actuator Features:

• Power supply: 24V AC/DC
• Control signal: 2-10V DC modulating control
• Spring return (SR) operation for fail-safe positioning on power loss
• Compact direct-mount design with 90-second run time
• LED position indicator for visual feedback
• Manual override capability for commissioning and service

This factory-assembled combination ensures proper valve/actuator matching and eliminates field assembly errors. Ideal for small zone control, radiant heating, fan coil units, and other applications requiring precise flow control with fail-safe spring return functionality. The 2-10V control input provides smooth modulating control compatible with most building automation systems and DDC controllers.