A knife gate valve is a component that utilizes a blade to cut through clogging of heavy liquids. Knife gate valves are used is a lot of processing plants today and come in large sizes which make it easier to handle thick flows of light grease, heavy oils, varnish, slurry, waste water and paper pulp. Knife gate valves are designed to work in some of the most harsh environments, typically having a sharpened blade to cut through heavy liquids.