Wafer Type Handle Lever Manual Operation Cast Iron Butterfly Valve. Wide Size Range: Nominal diameter available from 50mm (2 inch) to 1000mm (40 inch). Versatile Medium Compatibility: Suitable for fresh water, sewage, sea water, air, food, medicine, oils, and acids. Durable Material Options: Body made of cast iron or ductile iron with various disc and seat materials. Flexible Customization: Offers full customization, minor customization, and customization from samples or designs. Low Pressure Rating: Designed for low pressure applications with PN1.0 and PN1.6 options. Manual Operation: Features a lever type manual operation mechanism for easy control. Wafer Connection Type: Wafer end type design suitable for compact installation in pipelines. Surface Protection: Epoxy coating available for enhanced surface protection and corrosion resistance.