Belimo B310B+LF24-SR Control Valve with Actuator Cv - 1/2 3-Way 1.2 24V 2-10VDC

The Belimo B310B+LF24-SR is a compact control valve assembly combining a 1/2-inch 3-way brass ball valve with an integrated LF24-SR electric actuator. This valve is designed for HVAC hydronic applications requiring precise proportional control of hot or chilled water flow in heating and cooling systems.

Key Specifications:

• Valve size: 1/2 inch NPT threaded connections
• Configuration: 3-way mixing/diverting valve
• Flow coefficient (Cv): 1.2
• Actuator voltage: 24V AC/DC
• Control signal: 2-10 VDC modulating control
• Spring return: Fail-safe spring return to normal position on power loss
• Body material: Lead-free brass construction for potable water compliance

Features and Benefits:

• Proportional control allows precise temperature modulation in fan coils, unit heaters, and radiant systems
• Spring return functionality provides automatic fail-safe positioning during power outages
• Compact direct-mount design eliminates need for separate brackets or linkages
• Lead-free construction meets NSF/ANSI 61 and 372 standards for drinking water applications
• Compatible with standard DDC building automation systems using 0-10V control outputs
• Quick 60-90 second runtime for responsive temperature control

This valve assembly is ideal for small zone control applications, radiant heating/cooling manifolds, fan coil units, and domestic hot water recirculation systems where space is limited and reliable proportional control is essential.