The FS4-3SJ Flow Switch from McDonnell Miller features a 1 BSPT connection, making it suitable for various fluid monitoring applications. This flow switch is designed to detect the presence or absence of flow in pipes, ensuring efficient system operation. Constructed with high-quality materials, it offers durability and reliability in demanding environments. The compact design allows for easy installation, and it meets industry standards for performance and safety. Ideal for HVAC systems and industrial processes, this flow switch is a critical component for maintaining system integrity.