Rotary Airlock Valves is very important component, for the controlled material feeding or discharging in various process industries. Rotary valves are commonly referred to as a rotary feeder, rotary vane feeder or an airlock feeder. When a product moves from one part of a process equipment or vessel to another, whether this be gravity-fed, under vacuum, or by pressure it is vital to retain control over the process and Rotary Valves Can Regulate feed rate Minimise pressure or air loss and provide metering and volume control