Bell & Gossett 117638 FS-2 Circuit Sentry Flo-Setter II is an externally adjustable balancing valve for hydronic HVAC systems. This valve provides precise flow control and shut-off in commercial heating and cooling applications. The FS-2 model features a memory stop for repeatable settings and a drain port for system maintenance.

Hydraulics and Pneumatics: Bell & Gossett FS-2 Externally Adjustable Circuit Sentry Flo-Setter II Valves The Bell & Gossett 117638 FS-2 Externally Adjustable Circuit Sentry Flo-Setter II Valve is a precision-engineered ball valve designed to optimize flow control in hydronic heating and cooling systems. This innovative valve features an externally adjustable design, allowing for precise flow settings without the need for system shutdown, enhancing operational efficiency and convenience. ## Key Features • **Externally Adjustable**: Allows for flow rate adjustments without disrupting system operation, providing flexibility and ease of use. • **High-Quality Construction**: Made with durable materials that ensure long-lasting performance and reliability in various HVAC applications. • **Precision Flow Control**: Engineered to deliver accurate flow settings, enhancing system efficiency and ensuring optimal performance. • **Compact Design**: The space-saving design facilitates installation in tight spaces, making it suitable for both residential and commercial applications. • **Compatibility**: Designed to work seamlessly with Bell & Gossett's hydronic systems, ensuring optimal integration and performance. ## Applications • **Hydronic Heating Systems**: Ideal for maintaining proper flow in heating applications, ensuring consistent heating performance. • **Cooling Systems**: Effectively regulates flow in cooling applications, enhancing system efficiency and comfort. • **Commercial and Residential Use**: Suitable for various settings, from large commercial buildings to residential properties, where precise flow control is essential. ## Benefits • **Enhanced System Efficiency**: The ability to adjust flow rates externally leads to better energy management and reduced operational costs. • **Increased Reliability**: Robust construction and precision engineering ensure long-term reliability and minimal maintenance needs. • **User-Friendly Operation**: The externally adjustable feature simplifies the process of flow management, saving time and reducing the need for specialized tools. --- *Product information compiled with AI assistance for reference purposes.*