초록 ▼

A double-seat valve unit with leakage control has a greater valve plate located below a smaller valve plate, adjusting bars connected with the valve plates and arranged so that the adjusting bar of the greater valve plate extends through the interior of the adjusting bar of the smaller valve plate a

A double-seat valve unit with leakage control has a greater valve plate located below a smaller valve plate, adjusting bars connected with the valve plates and arranged so that the adjusting bar of the greater valve plate extends through the interior of the adjusting bar of the smaller valve plate and both valve plates move to an open position from above downwardly, a leakage conduit having a portion located inside a valve housing and movable outwardly, an annular gap formed between the adjusting bars for flowing of cleaning fluid, and a return valve formed by the lower valve plate.

대표청구항 ▼

A double-seat valve unit with a leakage control comprising a housing having an upright axis and provided with two seats; upper and lower valve plates cooperating with said seats and movable independently of one another from above downwardly to an open position in which said valve plates abut against

A double-seat valve unit with a leakage control comprising a housing having an upright axis and provided with two seats; upper and lower valve plates cooperating with said seats and movable independently of one another from above downwardly to an open position in which said valve plates abut against one another and bound an inner chamber therebetween and also movable upwardly to a closed position in which they abut against said seats, said upper valve plate being smaller and said lower valve plate being greater; means for supplying a cleaning fluid; two adjusting bars each connected with a respective one of said valve plates so as to move the same and arranged so that the adjusting bar of said lower valve plate extends through the interior of the adjusting bar of said upper valve plate and an annular gap is formed therebetween, said means for supplying a cleaning fluid communicating with said gap for passing the cleaning fluid through the latter; a leakage conduit communicating said inner chamber formed between said valve plate with open air and having a portion located in said housing and partially movable outwardly of said housing in said open position, said lower valve plate forming a return valve; and movement securing means arranged to guarantee unobjectionable movement of said valve plates and provided on the adjusting bar of said lower seat, which extends inside the adjusting bar of said upper seat, said movement securing means being located below said seats.