Belimo B317+LF24-SR-S 3/4" NPT 3-Way Characterized Control Valve with Actuator

The Belimo B317+LF24-SR-S is a 3/4" NPT threaded 3-way characterized control valve (CCV) assembly featuring an integrated spring return actuator. This compact valve assembly delivers precise proportional control for hydronic heating and cooling systems with a flow coefficient (Cv) of 4.7.

Key Features:

• 3/4" NPT threaded connections for easy installation
• 3-way mixing or diverting configuration for flexible system design
• 4.7 Cv flow coefficient for medium-capacity applications
• 24V power supply with 2-10 VDC proportional control signal
• Spring return actuator for fail-safe positioning on power loss
• Characterized flow design for accurate temperature control
• Switch (SW) auxiliary output for position indication
• Lead-free (LF) brass construction for potable water compliance

This valve assembly combines Belimo's reliable linear actuator technology with a precision-engineered control valve body, providing accurate flow control for variable volume hydronic systems. The spring return feature ensures the valve returns to a predetermined position during power failure, enhancing system safety. Ideal for commercial HVAC applications including fan coil units, heat exchangers, and terminal unit control.