Cornelius R Aarts

US Patent:

51525003, Oct 6, 1992

Filed:

Jul 30, 1991

Appl. No.:

7/738226

Inventors:

Luther T. Hoobyar - Mountain View CA
Walter L. Connolly - Moraga CA
Timothy G. Hughes - Walnut Creek CA
Cornelius R. Aarts - Lafayette CA

Assignee:

Asepco, Inc. - Mountain View CA

International Classification:

F16K 712

US Classification:

251269

Abstract:

In an aseptic valve construction, a valve body having an inlet flow passage and at least one outlet flow passage, said valve body having a valve seat surrounding the inlet flow passage, said body having an opening therein in alignment with the inlet passage and in communication with the inlet passage and with said at least one outlet passage, said body having a shoulder providing a shoulder seat surrounding said opening, an actuator sleeve adapted to be secured to said valve body, a shaft, means mounting said shaft in said sleeve to permit axial movement of said shaft in said sleeve, a diaphragm removably secured to said shaft, said diaphragm having a portion movable into engagement with the valve seat surrounding the inlet passage, diaphragm actuator means engaging said shaft for causing axial movement of said shaft for moving said diaphragm between open and closed positions with respect to said valve seat whereby in a closed position said diaphragm interrupts the flow of a liquid from the inlet passage through the outlet passage and in an open position permits the flow of liquid from the inlet passage to the outlet passage and means for preventing rotation of said diaphragm as said shaft is actuated to cause movement of said diaphragm between open and closed positions, said diaphragm having a portion engaging the shoulder seat which is retained in engagement with the shoulder seat during movement of the diaphragm between open and closed positions.