Ductile iron knife gate valves are engineered for isolation in municipal wastewater, sludge handling, paper pulp, and industrial effluent pipelines. Designed with a robust EN-GJS-500-7 ductile iron body and a precision-guided stainless steel knife blade, these valves easily shear through suspended solids, fibers, and viscous media without clogging the seat. Each valve features a high-grade powder epoxy coating with a minimum thickness of 250 µm for superior corrosion resistance. Available in wafer, lugged, or flanged patterns, they deliver reliable shut-off and low operating torque in demanding gravity or pressurized industrial discharge systems.