초록 ▼

A polyjet valve has an inlet opening into an inlet chamber normally communicating through a movable polyjet sleeve in variable amounts and in one direction with an outlet chamber having an outlet. There is a block to close the outlet and a conduit to establish backflow from the outlet chamber throug

A polyjet valve has an inlet opening into an inlet chamber normally communicating through a movable polyjet sleeve in variable amounts and in one direction with an outlet chamber having an outlet. There is a block to close the outlet and a conduit to establish backflow from the outlet chamber through the polyjet sleeve in the reverse direction and then to waste.

대표청구항 ▼

A valve comprising a body including means defining an inlet chamber disposed about an axis; means defining an outlet chamber disposed about said axis and adapted to communicate with said inlet chamber; a cylindrical polyjet sleeve disposed between said chambers and extending along said axis and havi

A valve comprising a body including means defining an inlet chamber disposed about an axis; means defining an outlet chamber disposed about said axis and adapted to communicate with said inlet chamber; a cylindrical polyjet sleeve disposed between said chambers and extending along said axis and having a plurality of radially extending, circumferentially arranged, axially spaced discrete openings therethrough and adapted to communicate with said inlet chamber and said outlet chamber, each of said openings having a predetermined axial length; a ring coaxial with and engaging said sleeve and defining an annular groove open to said sleeve and of substantially said predetermined axial length; means for moving said polyjet sleeve and said ring relative to each other along said axis for moving individual ones only of said openings progressively into registry with said annular groove regardless of the position of said ring; means for substantially blocking outflow from said outlet chamber; means for providing a drain from said annular groove; and means for circulating wash fluid from said inlet chamber into said outlet chamber and through successive individual ones only of said openings into said annular groove regardless of the position of said ring and into and through said drain.