Flow Sensors & Switch

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Flow Switches

  • Piston
  • Shuttle
  • Paddle

Unique Designs . . . For Use in Liquids or Gases

GEMS’ line of flow switches features a broad range of configurations for use in liquids or gases. At preset rates, ranging from 50 cc/min. to 100 GPM, GEMS switches will initiate alarm actuation or automatic shut-down of a system.

These switches feature high quality, corrosion-resistant materials for use in the toughest environments. Material choices, ranging from stainless steel to Ryton®, offer vast chemical compatibility. Versions include switches with fixed or adjustable actuation settings, models for viscosity compensation or high pressures, in-line models and designs to satisfy any mounting or space requirement.

Variety of Operating Principles

The versatile GEMS Flow Switch line utilizes four basic operating principles. This catalog is organized into four operational types: Piston, Shuttle, Paddle and Electronic. The Shuttle models are for use with high flow rates; the Piston types are designed for low flow rates; the Paddle for large line sizes and the Electronic switches encompass state-of-the-art electronics and positive visual indication.

Selection Guide

Set Point Switch Series Body Materials
Water Air
50 cc to 300 cc/min. 2 to 50 SCFH FS-926 Alloys
0.1 to 1.0 GPM (oil) - FS-930
0.1 to 1.5 GPM - FS-4 Engineered Plastics
0.1 to 1.5 GPM 0.5 to 25.0 SCFM FS-925 Alloys
0.1 to 1.5 GPM - FS-927
0.15 to 2.0 GPM - FS-380
0.25 to 2.0 GPM - FS-380P Engineered Plastics
0.1 to 60 GPM - RFS-2500 Rotorflow1 Eng. Plastics & Alloys
0.5 to 3.0 GPM - FS-480 Alloys
0.5 to 5.0 GPM - FS-150 Engineered Plastics
0.5 or 2 GPM - FS-400P
0.25 to 5.0 GPM - FS-500
0.5 to 20.0 GPM 1.0 to 160.0 SCFM FS-10798 Alloys
0.5 to 100 GPM - FS-200
0.75 to 10.0 GPM - FS-400
0.75 to 14.0 GPM - FS-400 Adjustable
1.0 to 15.0 GPM - FS-200 Adjustable
Dependent on Pipe Size and Paddle Length - FS-550 Series


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“Mifa Systems now represents Internationally reputed Process Control majors like:”

  • Toho Electronics, Japan
  • Keba AG, Austria
  • Yaskawa Electric
  • Rkc Instrument Inc., Japan
  • Mb Connectline GmbH, Germany
  • Wedgewood Analytical Inc., USA
  • Metrohm India
  • Gems Sensors & Controls, USA & UK.