The Johnson Controls FS1-6 Flow Switch is a professional-grade solution for proving liquid flow in critical HVACR and industrial piping systems. Engineered with a waterproof construction and a corrosion-resistant enclosure, this SPDT flow switch provides reliable signaling for pump control, chiller protection, and process cooling loops. The unit features a magnetically coupled design that isolates the electrical switch housing from the process media, effectively preventing leaks and internal damage. Designed for versatility, the PPS plastic vane is field trimmable, making it compatible with 1-inch and larger pipe diameters. With a maximum operating pressure of 150 psig and temperature ratings up to 212?F, the FS1-6 liquid flow switch ensures robust performance in diverse environments. Technicians can easily integrate this unit into existing control circuits thanks to the standard 1-inch NPT pipe connection and snap-acting switch mechanism, ensuring precise flow detection and system safety. Key Benefits Universal Compatibility: The field trimmable vane allows for installation in a wide range of pipe sizes, starting from 1 inch and extending upwards, reducing the need for multiple SKUs. Enhanced Durability: The waterproof construction and leak-proof magnetic coupling protect the internal switch components from moisture and process fluids. Reliable Signaling: Equipped with a Single Pole Double Throw (SPDT) switch, providing flexible wiring options for normally open or normally closed control loops. High Pressure Tolerance: Rated for an operating pressure of 150 psig, making it suitable for high-demand industrial and commercial HVAC systems. Common Questions How do I adjust the FS1-6 for different pipe sizes? The vane is marked for various pipe diameters. For pipes larger than 6 inches, use the full-length vane. For smaller diameters, trim the PPS plastic vane following the molded graduations to ensure proper clearance and sensitivity. Can this flow switch be used with contaminated fluids? The Johnson Controls FS1-6 is designed for use in clean process media. Particles, scale, or debris can accumulate around the vane assembly and interfere with the magnetically coupled operation, potentially causing inaccurate signals. What is the proper orientation for installation? The switch must be installed with the flow arrow on the housing pointing in the direction of liquid flow. Use appropriate pipe sealant on the 1" NPT threads but ensure no sealant enters the vane chamber to prevent mechanical binding. Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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