KOBOLD FPS flow switches are used wherever reliable control for min. or max. liquid flow is required. The flow switch operates on the paddle-bellows principle. The flowing medium exerts a force on the paddle and thereby actuates a micro switch. The interchangeable paddle, in conjunction with an adjustment screw, allows for a wide variety of switching points and adaptation of the instrument to different pipe sizes. The internals of the instrument are separated from the process by the bellows, making the FPS an excellent choice for dirty media. The FPS-6000 is a special design used with extremely low switching points.