Abstract: A valve comprising a slidable internal shuttle that is shiftable between a valve closed and a valve open configuration is provided. The valve can be configured so that minimal force is required to effect shifting of the shuttle, even though the valve can be of a large diameter. In the valve closed configuration, the shuttle blocks communication between the valve inlet and outlet. Sliding of the shuttle to the valve open configuration permits fluid to flow through the valve. The shuttle can be configured with internal surfaces that provide some or no biasing forces acting upon the shuttle in the valve closed direction.

Abstract: A passive isolation valve equipped with one or more nozzles configured to deliver a flow of gas to an area adjacent the valve seat so as to remove accumulated particulate material from the area of the valve adjacent the valve seat that otherwise may adversely affect closure of the valve in response to an energetic event.

Abstract: A passive isolation valve equipped with one or more nozzles configured to deliver a flow of gas to an area adjacent the valve seat so as to remove accumulated particulate material from the area of the valve adjacent the valve seat that otherwise may adversely affect closure of the valve in response to an energetic event.

Abstract: An apertured rupture disc support member (32, 90) is provided for use in a rupture disc assembly (70). A rupture disc (30, 30a) comprising one or more embossed segments (80) that are complemental with the support member apertures (56) is also disclosed. The pressure relief assembly (12) is particularly suited for use in sanitary pressure relief applications.

Abstract: An apertured rupture disc support member (32, 90) is provided for use in a rupture disc assembly (70). A rupture disc (30, 30a) comprising one or more embossed segments (80) that are complemental with the support member apertures (56) is also disclosed. The pressure relief assembly (12) is particularly suited for use in sanitary pressure relief applications.

Abstract: An apertured rupture disc support member (32, 90) is provided for use in a rupture disc assembly (70). A rupture disc (30, 30a) comprising one or more embossed segments (80) that are complemental with the support member apertures (56) is also disclosed. The pressure relief assembly (12) is particularly suited for use in sanitary pressure relief applications.

Abstract: An apertured rupture disc support member (32, 90) is provided for use in a rupture disc assembly (70). A rupture disc (30, 30a) comprising one or more embossed segments (80) that are complemental with the support member apertures (56) is also disclosed. The pressure relief assembly (12) is particularly suited for use in sanitary pressure relief applications.

Abstract: A metal reverse buckling sanitary rupture disc is provided having a central bulged section in which the convex surface of the bulged section is relatively smooth and of substantially uninterrupted configuration. A small segment region of the central bulged section is strain hardened by plastic deformation causing the segment region to have greater residual stress than the remainder of the central bulged section. When the disc is subjected to an overpressure condition against the convex surface of the bulged section sufficient to effect reversal of the bulged section, such reversal commences at the higher residual stress segment region of the bulged section.

Abstract: A metal reverse buckling sanitary rupture disc is provided having a central bulged section in which the convex surface of the bulged section is relatively smooth and of substantially uninterrupted configuration. A small segment region of the central bulged section is strain hardened by plastic deformation causing the segment region to have greater residual stress than the remainder of the central bulged section. When the disc is subjected to an overpressure condition against the convex surface of the bulged section sufficient to effect reversal of the bulged section, such reversal commences at the higher residual stress segment region of the bulged section.