Valve types guide.
https://diqn32j8nouaz.cloudfront.net...s_fullsize.jpg
Previously:
https://www.homemadetools.net/forum/...518#post201001
https://www.homemadetools.net/forum/...729#post197978
https://www.homemadetools.net/forum/...542#post197213
https://www.homemadetools.net/forum/...880#post171413
https://www.homemadetools.net/forum/...240#post180821
