KWAI Mining Equipment are manufacturers of quality Pinch Valves and Plastic Pipe Couplers at affordable prices. Our Plastic Pipe Couplers replace the need for plastic pipe welding. One can join plastic piping withing minutes and pump up to 2500kPa. KWAI Pinch Valves are light on your pocket but deliver superior results on a constant basis and are built to withstand abrasive slurry applications.