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Profile: AKO Armaturen & Separations GmbH specializes in offering pneumatically actuated pinch valves. We are an ISO 9001:2008 certified company. We manufacture pinch valves, knife gate valves, pipe manometer, pressure relief valves, sleeves for pinch valves and accessories. Our pinch valves are the ideal solution for isolating and regulating abrasive, corrosive & fibrous products. It is used as an isolating valve or regulating valve for emulsions, sludges, dusts, gaseous materials, compressed air, powder, granulates, and pellets. Our pinch valves are available in air operated and mechanical types. Air operated pinch valves are used in a variety of pneumatic conveying systems, such as the silos/cement sector, pigment & granulate handling, ceramics, glass, plastics, waste water treatment, pharmaceuticals and foodstuffs industry. These are also used in metering & weighing, powder coating, vacuum toilet, vacuum conveying and vacuum & compressed air control systems. The knife gate valve is a uni-directional wafer valve for general industrial application. The nominal widths available range from DN050 to DN1200 with flange connections complying with EN 1092-2 PN10 or alternatively, ANSI B16.5. Drive variants offered for the knife gate valve include a manually actuated handwheel model with rising or non-rising stem, or alternatively a hand lever drive, or double-and single-acting pneumatic cylinders (spring return) & electric actuators. The knife gate valve is predominantly used in the paper & pulp, chemical, mining, power station technology and the food industry. These are also used in biogas plants, sewage treatment plants, and in the sugar, steel and animal feed sectors.