? Parag engineering presents an oil sealed, rotary high vacuum
pump. It is an oil immersed rotary vane type pump. The rotor, which
has two vanes, is mounted eccentric with the main body. As the
rotor rotates, the vanes sweep the crescent shaped air space twice
in each revolution. The vanes maintain close contact with the main
body by spring force. An inbuilt non-return valve blocks back-flow
of air. The pump is manufactured from graded materials. All moving
parts are precisely machined and ground to close tolerances. The
drive shaft carries an extra bearing to take the driving load of
the pulley which otherwise results in fast wearing of bush,
resulting in leakage and drop in vacuu