B3. F10037530-DWG1.pdf

This document is a detailed technical drawing for a Valve Relief assembly for the Fermi National Accelerator Laboratory, part of the United States Department of Energy. The technical drawing (drawing number F10037530) shows a 6-inch vacuum valve relief assembly with precise engineering specifications, including a top-down circular view and a side cross-sectional view.

The drawing includes seven components made from various materials like 304 and 302 stainless steel, EPDM, and aluminum, with specific part numbers and descriptions. Key specifications include an approximate assembled weight of 14 lbs, a solid height of 0.56 inches, and a (Ø9.25) diameter. The notes specify critical manufacturing requirements such as surfaces being free of dirt, grease, oil, and chips, and welding procedures to prevent warpage. All welds must be vacuum leak tight, with leak testing requiring no detectable leaks using a helium leak detector with a minimum sensitivity of 10-8 ATM CC/SEC.