Cazuela de Vaca (Beef and Pumpkin Stew) This hearty Chilean stew of beef, corn, and pumpkin is a one dish meal. The main ingredients are stewed in serving-sized pieces, so that each person receives a large piece surrounded by a broth with the other vegetables.
Quick Answer. A rotary vane vacuum pump works by using centrifugal force to turn blades against the circular surface of a cylinder whereby pockets of air are pushed from an inlet port to an outlet port as air pressure increases.
The movement of the pressurized fluid causes an unbalanced force, which in turn forces the rotor to turn in one direction. Vane motor. Piston-type motors are available in a variety of different styles, including radial-, axial-, and other less common designs.