The FS4-3J Flow Switch from Verne Simmonds Co McDonnell Miller is an essential component for monitoring fluid flow in various applications. Designed with a 1 BSTP connection, this OEM switch ensures compatibility with existing systems. Constructed from durable materials, it offers reliable performance and longevity. The flow switch is engineered to meet industry standards, providing accurate flow detection and enhancing system efficiency. Its compact design allows for easy installation in tight spaces, making it a versatile choice for professionals seeking dependable solutions.