Pipe Booster Pump Flow Switch Carries Out on-off Control Over Sensing Elements through a Water Flow Type Magnetic Control Device, Thus Achieving the Effects of Starting and Shutting Down Water Pumps. This water Flow Switch is to Protect the CO2 Laser Tube. When the Water Pump is not Working, the Water Sensor will Detective, and Shut Down the Laser Machine. So the Laser Tube will not be broken. It can be used with a Water Pump, REPLACING water chiller. Lift:3.2m, Flow:3000L/H, for 40w/60w/80w laser tube. For the Water Nozzles, Caliber: 8mm UPC 669819731286 ASIN B07BLM1YKW Brand Name Cloudray Part Number WFS13HT3008S Manufacturer Cloudray Material Type Water Flow Switch