The valve has an ID of 180mm, it is a simple check valve in step format that can be edited as needed. The file is also available as a solidworks assembled part. An STL is also available.
STL (Stereolithography, filesize: 385 KB), STP (STEP, filesize: 843 KB), OTHER (Other, filesize: 843 KB), SLDPRT (SolidWorks, filesize: 335 KB)