Belimo B311B+LF24-S 1/2 Inch 3-Way Bronze Ball Valve with 24V On/Off Actuator

The Belimo B311B+LF24-S is a compact 1/2-inch three-way bronze ball valve assembly featuring an integrated LF24-S electric actuator for on/off control applications in HVAC systems. This lead-free bronze valve is designed for reliable fluid diversion or mixing in heating, cooling, and domestic water systems.

Key Specifications:

• Valve size: 1/2 inch NPT threaded connections
• Flow coefficient (Cv): 1.9
• Valve body: Lead-free bronze construction for potable water compliance
• Actuator voltage: 24V AC/DC
• Control type: On/Off (2-position) with spring return
• Spring return functionality provides fail-safe positioning during power loss
• Auxiliary switch included for position indication or interlock circuits
• Three-way configuration for diverting or mixing applications

Features & Benefits:

• Direct-mount design eliminates the need for brackets and reduces installation time
• Spring return ensures the valve returns to its fail-safe position when power is removed
• Lead-free bronze construction meets NSF/ANSI 61 and 372 standards for drinking water applications
• Compact footprint ideal for tight mechanical spaces
• Auxiliary switch provides feedback for building automation systems
• Reliable Belimo quality with proven performance in commercial HVAC applications

This valve actuator assembly is commonly used in fan coil units, unit heaters, small air handlers, and radiant heating/cooling systems where simple two-position control with spring return safety is required.