JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. User Defined Inline Library Note: All flanges (blind, slip-on, and weld-neck) have upstream (<flange>_up) and downstream (<flange>_down) variations based on attraction to the previous or next component. Angle Valve Ball Valve Blind Flange Butterfly Valve Check Valve Gate Valve Globe Valve Knife Valve Plug Valve Slip-On Flange Weld-Neck Flange Parent topic: Appendix B - Initial Equipment Library