This products is produced by PETF plastic material with a long paddle, suitable for big pipe, used in SPA Appliance, Sea Water Heating Systerm, Water Purification Equipment, Welding Equipment, Laser Systerm, to measure or control the flow rate. This products is produced by special plastic material, so it will with a high performance about Chemical and Corrosion.Technology Data:* Protection Grade IP67* Media Temperature -10~100 Cd* Max Static Pressure 10 Bar* Metering Substances Gas, Water, Oil * Output: SPST BMF Magnetic Switch (Normal Open is standard, N.C is optional)* Max Voltage 3A(50VA) * Max Current 250VAC/DC 50W(Max)* Pressure Loss 0.01bar