Belimo B317B+LF120 3-Way Brass Ball Valve with Actuator 3/4" NPT 120V

The Belimo B317B+LF120 is a complete control valve assembly combining a 3/4" NPT threaded 3-way bronze ball valve with an LF120 spring return actuator. This compact valve package is designed for hydronic HVAC applications requiring reliable mixing or diverting control with automatic failsafe positioning.

Key Specifications:

• Valve size: 3/4 inch NPT threaded connections
• Valve type: 3-way brass/bronze ball valve
• Flow coefficient (Cv): 4.7
• Actuator: LF120 non-spring return electric actuator
• Voltage: 120V AC
• Control: 2-position on/off control
• Spring return function for failsafe operation
• Lead-free compliant construction

Features and Benefits:

• Factory-assembled valve and actuator combination ensures proper matching and reduces installation time
• Spring return actuator automatically returns valve to failsafe position on power loss
• Bronze construction provides durability and corrosion resistance
• Compact design minimizes space requirements in mechanical rooms and tight installations
• Lead-free materials meet drinking water safety standards
• Suitable for heating, cooling, and domestic hot water applications

This valve assembly is ideal for zone control, mixing applications, and changeover duties in commercial and residential HVAC systems where reliable 2-position control with automatic spring return is required.