Patent ID: 11953097
Assignee: APPLIED MATERIALS, INC.
Field: nan (nan)
Classification: CPC nan | IPC F  H

Claim 13:
14. A chamber system, comprising:
a first chamber unit;
a second chamber unit; and
an isolation valve coupled to the first chamber unit and the second chamber unit and configured to control fluid flow between the first chamber unit and the second chamber unit, wherein the isolation valve comprises:
a valve body defining a first port providing fluid access to the first chamber unit, and a bottom wall defining a seating surface and a second port providing fluid access to the second chamber unit, wherein the first port is fluidly coupled with a first fluid source, and a shielding gas source is in fluid contact with the first port or a shielding gas inlet that is fluidly coupled with the first chamber unit; and
a flapper disposed inside the valve body having a flapper surface, wherein the flapper is pivotable within the valve body to a first position such that the flapper surface is away from the seating surface defined by the valve body to allow fluid flow between the first chamber unit and the second chamber unit, wherein the flapper is further pivotable within the valve body to a fully pivoted position such that the flapper surface is parallel and proximate to the seating surface and planar across the second port to restrict fluid flow between the first chamber unit and the second chamber unit, wherein when the flapper is in the second position, the seating surface and the flapper surface form a non-contact seal to restrict fluid flow between the first chamber unit and the second chamber unit to a low flow conductance.