Belimo B312+TR24-SR/300 1/2" 3-Way Stainless Steel Ball Valve with Proportional Control Actuator

The Belimo B312+TR24-SR/300 is a compact 3-way stainless steel ball valve assembly designed for precise flow control in HVAC systems. This professional-grade valve combines a 1/2" NPT threaded connection ball valve with an integrated 24V proportional control actuator, providing reliable modulating control for heating, cooling, and mixing applications.

Key Specifications:

• Valve Size: 1/2" NPT threaded connections
• Configuration: 3-way diverting or mixing service
• Flow Coefficient (Cv): 3.0
• Valve Body Material: Stainless steel construction for durability and corrosion resistance
• Actuator: TR24-SR non-spring return proportional actuator
• Power Supply: 24V AC/DC
• Control Signal: 2-10V DC analog proportional control
• Fail Position: Non-spring return (maintains last position on power loss)
• Rotation Time: Approximately 300 seconds for 90° rotation

Features and Benefits:

• Proportional control allows precise modulation of water flow for accurate temperature control
• Stainless steel ball and body ensure long service life in demanding applications
• Compact integrated design simplifies installation and reduces space requirements
• Non-spring return actuator maintains valve position during power interruptions, preventing system disruption
• Low torque operation provides quiet, smooth modulation
• Suitable for chilled water, hot water, and glycol solutions in commercial HVAC systems

This valve actuator assembly is ideal for use in fan coil units, unit heaters, heat exchangers, and other applications requiring precise 3-way flow control with electronic modulation. The 2-10V control input makes it compatible with most modern building automation systems and HVAC controllers.