Ball valve assembly

Details Ball valve assembly Ball valve assembly

2008-04-10

2010-12-14

Fristoe, Jr., John K (Department: 3753)

Valves and valve actuation

Rotary valves

Seat or interface seal

C251S121000, C251S315010, C251S359000

Reexamination Certificate

active

07850143

ABSTRACT:
A ball valve assembly for controlling flow of a mixture. The ball valve assembly includes a body with a cavity therein and a ball positioned in the cavity with a passage therethrough, and a low-pressure valve seat and a high-pressure valve seat for locating the ball therebetween. The ball is movable between an open position, in which flow of the mixture through the passage is permitted, and a closed position, in which flow of the mixture through the ball is substantially prevented. The low-pressure valve seat includes one or more scallops formed to permit movement of at least a portion of the solid particles past the low-pressure valve seat when the ball is in the open position.

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