18 Series two-way bi-directional knife gate valve knife gate valve made of cast iron or stainless steel. In strict accordance with relevant quality standards, in line with EN ISO 9001 quality standard. Description: 18 Series two-way knife gate valve made of cast iron or stainless steel. In strict accordance with relevant quality standards, in line with EN ISO 9001 quality standard. Depending on the medium, choose different sealing materials. Knife Gate Valves are generally the next shot, and can also provide dark rod, you can install a variety of drives. Scope: Suitable for water systems, compressed air, sewage systems and water purification systems, chemical and food industry systems. Viscous media can be used with solid or liquid particles floating. Can be used for throttling or regulating the flow, with a self-cleaning function. Diameter: DN50-600