The FS7-4DS Flow Switch features a 1-1/4 NPT connection and is manufactured by Verne Simmonds Co McDonnell Miller. This flow switch is designed for reliable flow detection in various applications, ensuring optimal performance and safety. Its durable construction and high-quality materials provide longevity and compliance with industry standards. The FS7-4DS is easy to install and integrates seamlessly with existing systems, making it an ideal choice for HVAC and fluid management applications. This device is essential for maintaining proper flow rates and preventing system failures.