Vacuum pump
A vacuum pump is a machine that creates a vacuum that discharges or absorbs air in a closed or semi-confined space to a relative vacuum in the local space. Common vacuum pumps are reciprocating vacuum pumps, water ring pumps, molecular pumps, rotary vane vacuum pumps, piston vacuum pumps, swing piston vacuum pumps, diaphragm vacuum pumps, linear vacuum pumps and other types are very much. ...