indicating type, magnetically actuated flow switches are designed for positive detection of fluid flow through your equipment. Flow range covered is from 1 to 150 LPM. Fluid Flow in the System is seen through transparent tube. The clearance between the float and inner surface of the transparent tube are large enough to let floating particles to pass through, eliminating the chances of clogging. This also reduces the pressure drop across the switch. All switches are strong and lightweight. Adequate magnetic shielding is provided as an in-built feature, enabling the user to mount the switch in any location.