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.
There are three ways to regulate the flow of a diaphragm pump. 1  Increase or reduce air pressure, ensuring you are within the pumpâs operating limits. 2  Increase or decrease the amount of air volume using a valve on the air line. 3  Open or close a valve on the fluid discharge.