Belimo B217B+LF120-S 3/4" Two-Way Ball Valve with Spring Return Actuator

The Belimo B217B+LF120-S is a complete valve and actuator assembly combining a 3/4-inch two-way characterized control valve with an electric spring return actuator. This compact assembly is designed for on/off control applications in HVAC systems, providing reliable flow control for heating and cooling circuits.

Key Specifications:

• Valve size: 3/4 inch NPT threaded connections
• Cv rating: 4.7 (flow coefficient)
• Valve type: Two-way characterized control valve (CCV)
• Actuator: LF120-S spring return, failsafe positioning
• Power supply: 120V AC
• Control: On/Off (2-position) with auxiliary switch
• Failsafe operation: Spring return ensures valve closes on power loss
• Running time: Approximately 30 seconds

Features and Benefits:

• Factory-assembled valve and actuator combination for quick installation
• Characterized ball design provides optimal control characteristics
• Spring return mechanism provides failsafe operation during power failures
• Auxiliary switch enables status monitoring and control integration
• Compact, space-saving design ideal for mechanical rooms and tight installations
• Belimo quality construction ensures long service life and reliable performance

Ideal for hydronic heating and cooling systems, chilled water applications, and general HVAC control applications requiring positive shut-off and failsafe operation.