The FS5-D-1 Flow Switch by McDonnell Miller is designed for precise flow detection in water systems. This model features a 1 NPT connection, ensuring compatibility with standard piping systems. Constructed from high-quality materials, it offers durability and reliability in various applications. The flow switch is ideal for monitoring water flow in heating systems, providing essential safety and operational efficiency. Its compact design allows for easy installation, making it a preferred choice for both commercial and residential setups.