Belimo B311+TFRB24-3 CCV 1/2" 3-Way Control Valve with Actuator

The Belimo B311+TFRB24-3 is a characterized control valve (CCV) assembly featuring a compact 1/2-inch three-way valve paired with a TFRB24-3 electric actuator. This factory-assembled combination provides reliable modulating control for hydronic HVAC systems including heating, cooling, and domestic hot water applications.

Key Specifications:

• Valve Size: 1/2 inch (DN 15) threaded connections
• Configuration: 3-way mixing/diverting valve
• Flow Coefficient (Cv): 1.9
• Actuator: TFRB24-3 with 24V AC/DC power supply
• Control: Floating point control (3-point)
• Spring Return: Equipped with spring return mechanism (22 lb spring torque)
• Fail-Safe Position: Returns to preset position on power loss
• Operating Mode: On/Off or floating control

Features:

• Factory-mounted actuator ensures proper alignment and eliminates field assembly errors
• Characterized valve body for precise linear flow control
• Spring return provides fail-safe operation during power interruptions
• Compact design suitable for tight mechanical spaces
• Bronze or brass valve body construction for durability
• Universal 24V power supply works with AC or DC systems

This valve assembly is ideal for zone control, terminal unit regulation, and mixing applications in commercial and residential HVAC systems. The floating control interface is compatible with standard zone controllers and building automation systems.