Rotary plug valve

摘要: An improved rotary plug valve is disclosed which lighter and less costly than conventional valves permits easy service, removal installation of the after welded in line. These benefits are result novel structural relationship between an access port side wall main housing plug. The made just slightly larger flow cavity sealed by located so that plug''s seal completely exposed for service inspection when open position. plug, port, given a Ushaped configuration it to pass through port.