The McDonnell Miller FS7-4J Flow Switch is a reliable device designed for monitoring fluid flow in various applications. With a 1-1/4 BSTP connection, this switch is engineered for easy installation and compatibility with standard piping systems. Constructed from high-quality materials, it ensures durability and long-term performance. The FS7-4J model features precise sensing technology, providing accurate flow detection and compliance with industry standards, making it essential for maintaining system efficiency and safety.