Belimo B309B Characterized Control Valve with Non-Spring Return Actuator - 1/2 3-Way

The Belimo B309B is a 1/2-inch three-way characterized control valve designed for precision flow control in HVAC systems. This valve features a compact integrated design with a non-spring return actuator, making it ideal for modulating applications where the valve position must be maintained during power failure.

Key Features:

• 1/2-inch NPT threaded connections for easy installation
• 0.8 Cv flow coefficient for accurate flow control
• Chrome-plated brass trim for corrosion resistance and durability
• Non-spring return actuator maintains valve position without power
• Characterized flow design provides precise control throughout the valve range
• Three-way configuration for diverting or mixing applications
• Compact design saves installation space

This valve is commonly used in hydronic heating and cooling systems for zone control, mixing applications, and diverting service. The characterized valve plug provides excellent control characteristics and tight shutoff. The chrome-plated brass construction ensures long-lasting performance in commercial HVAC applications.