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Improve your process control with Mcdonnell & Miller's SPDT flow switch. Designed as a general-purpose flow switch, it includes everything you need for optimal performance - a switch, paddles, washers, and a screw. With its 1 size and robust construction, this switch is perfect for a wide range of applications in various industries. Easily adjust the flow rate using the included washers to fine-tune your control. Increase efficiency and optimize your process with Mcdonnell & Miller's SPDT flow switch.