Description: Rotary Air Lock Valves are available in standard range of 150 to 750 mm in models designed as per IS 12059-1987 standards. These valves are designed for applications like handling lumps, chips, fibres, hard granules power and cement. The body of these valves is firstly made using closed grain cast iron and thereafter fabricated either from carbon steel plate or erosion resistant material. The rotor is fabricated in MS or SS with EN-8 shaft, entire assembly with vane edges being machined accurately and mounted on ball bearings located in two side covers with sealing arrangement. Special fibre, rubber strips, MS or SS strips are bolted on the edges of vanes for close fit between housing and rotor to avoid air leakage. Special constructions are offered for high temperature application, for handling highly abrasive and different materials and food. The drive consists of either of geared motor driving rotors through chain sprocket or assembly of electric motor and gearbox through chain sprocket. Torque limiting arrangement and speed variator proximity switches for zero speed can be incorporated if required.
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