Belimo B311+TFRB120 3-Way Characterized Control Valve 1/2 Inch 1.9 Cv Spring Return

The Belimo B311+TFRB120 is a complete valve and actuator assembly featuring a 1/2-inch three-way characterized control valve paired with a spring return electric actuator. This compact control valve assembly is designed for precise control of water and glycol solutions in HVAC applications, providing reliable mixing or diverting control in heating and cooling systems.

Key Features:

• 1/2-inch three-way valve configuration for mixing or diverting applications
• 1.9 Cv flow coefficient for accurate flow control
• Stainless steel valve body construction for durability and corrosion resistance
• Spring return actuator with fail-safe positioning
• Universal voltage 100-240V AC operation for flexible installation
• On/Off (2-position) control for simple open/close operation
• Characterized valve design for optimal control throughout the valve stroke
• Factory assembled and tested for reliable performance

This valve assembly combines Belimo's B311 valve body with the TFRB120 actuator, providing a ready-to-install solution for hydronic control applications. The spring return feature ensures the valve returns to a predetermined safe position in case of power failure, making it ideal for applications requiring fail-safe operation. Suitable for use in fan coil units, VAV boxes, heating/cooling coils, and other HVAC control applications.