作者: Earl A. Bake , Leonard J. Stephens
DOI:
关键词: Mechanical engineering 、 Diaphragm valve 、 Plug valve 、 Ball valve 、 Structural engineering 、 Engineering 、 Butterfly valve 、 Needle valve 、 Rotolock valve 、 Globe valve 、 Valve guide
摘要: SEAL ASSEMBLY FOR VALVES Abstract of the Disclosure This is a unitary all-plastic ball valve particularly for use with natural gas distribution lines which are plastic and buried in earth, where parts designed to assure accurate assembly order provide sealed body impervious most elements encountered, inside or outside valve.