GE-311 Small Size Plastic Paddle/Flap Flow Switch is produced by plastic material, used in Sea Water Heating System, Water Purification Equipment, Welding Equipment, Laser System, to measure or control the flow rate. The Magnet don't stay in the flow, so the magnet will not contact with the rust of the water flow, so could make sure the flow switch will be stability. International Protection could be IP68 (Optional).
Teflon PTFE material is available, but MOQ should be more than 300units
Add: Building 17 &22, No.2928, Chuan Zhou Highway, Shanghai, 201319, China