DeZURIK Extended Service Life Cast Knife Gate Valves (KGC-ES) are designed for improved sealing, extended packing life and reduced maintenance in the toughest corrosive, abrasive liquid slurry or dry material applications including: Pulp and Paper, Mining, Waste Water, Chemical, Petrochemical, Power, Steel, Food Processing or other Industries. DeZURIK 2-24" KGC Knife Gate Valves conform to the requirements for design and production testing of AWWA C 520-10, First Edition.They feature the DeZURIK Exclusive Premium Packing System consisting of a rounded packing chamber machined to tight tolerance, a matching knife gate with rounded edges, Anti-Extrusion Ring and many packing material options to meet the demands of your specific application.Many standard body, packing gland options are available including 304, 316, 317, 254-SMO, 2205 Duplex Stainless Steel, Hastelloy C 276. Standard gate materials also include 17-4PH or 410 Stainless Steel in addition to the materials listed above. Other body, gland and gate materials are available upon request. The stem is stainless steel. The yoke is heavy duty cast carbon steel or cast stainless steel for additional corrosion resistance