CLAMP RING FOR WELDED DIAPHRAGMS

摘要

A diaphragm sealed flow cavity comprises a first body comprising a support surface, a diaphragm comprising an outer portion that is joined by a weld to the first body, a clamped portion, and an inner portion that is movable along an axis, with the clamped portion of the diaphragm being compressed between the bearing surface and the support surface. The diaphragm sealed flow cavity may include a cylindrical body having a crimped portion for joining the cylindrical body to the first body. The diaphragm sealed flow cavity may also include a member that applies a live load to the clamped portion of the diaphragm. In the exemplary embodiments, the diaphragm sealed flow cavity may be realized as part of a diaphragm flow control valve having a valve body, diaphragm and a housing.

主权项

1. A diaphragm valve, comprising:
a first body comprising a support surface and a valve seat, a diaphragm comprising an outer portion that is joined by a weld to said first body, a clamped portion, and an inner portion that is movable along an axis to contact said valve seat to close the diaphragm valve, a second body comprising an outer portion having a bearing surface and a disk comprising a central opening, said disk extends radially inward from said outer portion to said central opening, said disk having a width that is less than a width of said outer portion, a load applying member that applies a force against a portion of said disk that is radially inward of said bearing surface, said clamped portion of said diaphragm being compressed between said bearing surface and said support surface, wherein said force that is applied to said portion of said disk by said load applying member produces a load that compresses said clamped portion of said diaphragm between said bearing surface and said support surface.