Patent ID: 6755389
Filing Date: 2004-06-29
Classification: F16K

Abstract:
A flow regulating valve comprising:a casing; a tube which having elasticity, both ends thereof being externally open, the tube inserted and installed in said casings; and a pushing member which changes an area of an aperture of said tube, wherein said pushing member has a diaphragm provided in said casing so as to face with said tube, and a fluid pressure supplying portion which moves said diaphragm to said tube side by supplying fluid pressure to a surface of said diaphragm, and said diaphragm is provided at upper and lower sides of said tube, and said fluid pressure supplying portion which branches from one air connective opening supplies fluid pressure to these upper and lower diaphragms and moves these diaphragms to said tube side; and, wherein said casing is divided into three portions in a vertical direction, said tube is installed in a central casing, said diaphragms are installed between an upper casing and said central casing and between a lower casing and said central casing, respectively.