초록 ▼

A plug valve includes a body having an interior wall and fluid passages therethrough with the interior wall having raised ridge portions thereon located in a selected pattern for cooperation with a resilient sealing cover which is molded on a plug body so that when a selected plug body having the co

A plug valve includes a body having an interior wall and fluid passages therethrough with the interior wall having raised ridge portions thereon located in a selected pattern for cooperation with a resilient sealing cover which is molded on a plug body so that when a selected plug body having the cover is inserted into the body the raised surfaces will engage and compress the resilient material to prevent fluid leakage therebetween; the plug member has a fluid passage which, upon rotation of the plug member in the body will be brought into and out of alignment with the fluid passages in the body; the body may have a plurality of fluid pathways which are selectable by selecting a plug member having a selected pathway for providing registry between a desired path of fluid travel.

대표청구항 ▼

A rotary plug valve having a body including a wall defining a plug receiving chamber, a plug member including fluid passage therethrough and having a peripheral side wall portion having a selected diameter, said side wall portion having at least a resilient material to a selected depth, said wall of

A rotary plug valve having a body including a wall defining a plug receiving chamber, a plug member including fluid passage therethrough and having a peripheral side wall portion having a selected diameter, said side wall portion having at least a resilient material to a selected depth, said wall of said body having openings therein disposed so that when said plug member is rotatably located in said chamber, said fluid passage will be alignable in flow communication with at least some of said openings, said wall further including raised metallic surface formed thereon extending from said wall into said chamber to a selected distance and located in a selected pattern relative to said openings so that, when said plug member is rotatably disposed in said plug receiving chamber, said metallic surface means will locally deform said resilient material and thereby sealingly engage sections of said resilient material of said plug member to substantially prevent leakage of fluid therebetween.