The SWITZER flow switches styles HR and HRM are robust piston operated instruments with very wide application capability. These flow switches are for use with water, oil (only with model HR) or other liquids. Style HR: Handles pressures upto 200 bar with several flow ranges in different line sizes. Style HRM: Same as style HR flow switch, but with additional 2½” (65mm) dial gauge added for direct reading of flow.

Indicating gauge is fixed to the flow switch body externally. Magnetic coupling provides total isolation between the piston inside the body and the external switch head & gauge unit. Pointer travel over a 90 deg scale provides local indication with accuracy of ±3% FSR. While brass version is used for non-aggressive media, the SS version is for aggressive liquids. HR model have adjustable settings.