... ", 3", 4", 5", 6", 8", 10", 12" Standard: DIN Material: PVC Environment friendly, non-toxic, good looking;Light weight, easy to ... handle and transport;Soft colors and excellent design, suitable for installation either exposed or hidden.Wonderful ability in chemical corrosion ... the standard, the quality, the size, the color, etc. "XE" PVC Plastic Flange Butterfly valve for Agriculture