INTRODUCTION Flow Switches Contents Page Start Thermal Dispersion Type .................................. G-2 Thermal Dispersion Piston Shuttle Paddle Piston Type................................................................ G-4 Shuttle Type ............................................................ G-18 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. Paddle Type ............................................................ G-25 Thermal Dispersion Types 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-theart electronics and positive visual indication. Piston Types Set Point Water Air Switch Series 50 cc to 300 cc/min. 2 to 50 SCFH FS-926 0.1 to 1.0 GPM (oil) - FS-930 0.1 to 1.5 GPM - FS-4 0.1 to 1.5 GPM 0.5 to 25.0 SCFM Body Materials Alloys Engineered Plastics FS-925 FS-927 FLOW SWITCHES Flow Rate Selection Guide Shuttle Types Alloys 0.1 to 1.5 GPM - 0.1 to 11 GPM - FS-600 0.1 to 60 GPM - RFS-2500 Rotorflow1 Eng. Plastics & Alloys 0.15 to 2.0 GPM - FS-380 Alloys 0.25 to 2.0 GPM - FS-380P 0.25 to 5.0 GPM - FS-500 0.5 to 3.0 GPM - FS-480 0.5 to 5.0 GPM - FS-150 0.5 or 2 GPM - FS-400P 0.5 to 20.0 GPM 1.0 to 160.0 SCFM FS-10798 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 Engineered Plastics Alloys Engineered Plastics Paddle Types Alloys Note: 1. See Section E. Flow Intro/ p1of1 / 28-APR-14 Visit www.GemsSensors.com for most current information. G-1http://www.GemsSensors.com