Rotary Air Lock Valve is used to minimize the system loses, while transferring the material between the vessels with different pressure or a volumetric feeder for metering material at specified low rates. The Valve is made using stainless steel, cast iron and mild steel to meet capacities up to 500Nt per revolution. The Valve builds a heavier air that lacks to closer tolerances which means better sealing properties having heavy cast housing and end plate design that provides sturdy rigid airlocks to overcome strain and distortion under heavy stress. Rotary Air Lock Valve is completely heat resistant and helps in feeding material into a pneumatic conveying system against pressure.