초록 ▼

Disclosed is a valve trim design for use in reducing valve cavitation. Valve and seat are axially movable and have frustoconical facing surfaces which form an annulus therebetween to control flow. The seat has an external frustoconical surface and a plurality of pairs of ports communicating with an

Disclosed is a valve trim design for use in reducing valve cavitation. Valve and seat are axially movable and have frustoconical facing surfaces which form an annulus therebetween to control flow. The seat has an external frustoconical surface and a plurality of pairs of ports communicating with an internal bore. The ports are aligned so that flow from the ports impinge upon each other within the interior chamber of the valve seat to reduce cavitation.

대표청구항 ▼

In a valve, a valve body having a valve chamber and inlet and outlet passages; a valve seat element in said chamber between said inlet passage and said outlet passage, said seat element having a bore formed therein; an end portion on said seat element closing said bore; a truncated conical seat surf

In a valve, a valve body having a valve chamber and inlet and outlet passages; a valve seat element in said chamber between said inlet passage and said outlet passage, said seat element having a bore formed therein; an end portion on said seat element closing said bore; a truncated conical seat surface on said seat element, said seat surface having a plurality of orifices extending therethrough and communicating with said bore; a valve element having a skirt portion and a pocket formed therein, said pocket having a truncated conical wall; and means movably securing said valve element in said valve chamber such that a portion of said seat element extends into said pocket in said valve element and said skirt portion of said valve element covers a portion of said plurality of orifices to form a plurality of tortuous flow paths.