Ball valve seat arrangement

Details Ball valve seat arrangement Ball valve seat arrangement

2005-07-14

2009-12-22

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

Valves and valve actuation

With means to increase head and seat contact pressure

Spring

C251S174000, C251S314000

Reexamination Certificate

active

07635113

ABSTRACT:
Ball valves that include a gland that is interposed between a spring and a seat. The ball valves include a valve body, a ball, a valve seat, and an annular spring. The spring urges the gland member toward the valve seat to urge the valve seat toward the ball.

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