RotaVal Ltd. (Wiltshire, UK) introduced a heavy-duty rotary valve for use where solids handled and operating conditions combine to cause abrasive erosion within the valve. It has on-site component replacement. The valves are used in discharging materials such as cement, PFA, granite dust, silica sand, and mineral powders under adverse pressure conditions. Standard valves are manufactured in cast iron, SG iron, Ni-hard, and carbon steel. The replaceable body liner can be hard chromed or ceramic coated. Rotor shaft sealing options include various types of gland packing, mechanical seals, and air or grease purge.
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