McDonnell & Miller FS6 High Sensitivity Liquid Flow Switch

McDonnell & Miller FS6 High Sensitivity Liquid Flow Switch is a precision, in-line flow switch engineered for accurate liquid monitoring in commercial and industrial piping. This 1 inch nominal size unit features threaded x threaded end connections and a versatile SPDT snap switch, delivering reliable switching with a current rating of 7.4 A at 120 VAC or 3.7 A at 240 VAC. Designed for broad compatibility, the device operates from 125 Volt-Amp at 120/240 VAC and handles a wide temperature range from 32 to 300°F and up to 100 PSI. With flow sensitivity management and a wide flow/no-flow differential (0.12–2.5 GPM flow; 0.06–1.5 GPM no-flow), it delivers dependable signal control across varied applications. UL listed for US and Canada, this switch is built for durable performance in demanding environments.

• Very High Flow Capacity
• In-Line Type with Nominal Size 1 Inch
• Switch Compartment
• End Connections: Threaded x Threaded
• SPDT Snap Switch, 7.4 A at 120 VAC / 3.7 A at 240 VAC
• Sensitivity Adjustable Screw
• Wide Operating Range: 32–300°F and 100 PSI
• UL Listed for Canada and US

Whether integrating into pumps, boilers, or processing lines, the FS6 provides reliable signal detection and easy installation in standard piping systems.