Low torque ball valve seat

Details Low torque ball valve seat Low torque ball valve seat

2006-01-24

2006-01-24

Jacyna, J. Casimer (Department: 3751)

Valves and valve actuation

With means to increase head and seat contact pressure

Seat pressed to valve

C251S192000, C251S315010, C251S317000

Reexamination Certificate

active

06988708

ABSTRACT:
A ball has a valve body defining an inner cavity and a fluid inlet and fluid outlet, a control ball element rotatably mounted in the inner cavity, and having a segment defining a ball face, and a flexible valve seat positioned in the valve body. The seat comprises a base portion, a cantilevered portion with a sealing face disposed toward the ball face, and a connecting portion between the base portion and the cantilevered portion that is lesser in width than are the base portion and the cantilevered portion.

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Masoneilan Catalog BN6004 showing 36004 Paramax Flanged Control Ball Valve with MN-7 Flexible PTFE Valve Seat (2 pages).
Fisher Controls VEE-Ball Rotary Control Valve instruction manual showing the PTFE Valve Seat “composition ball seal” (1 page).
International Search Report for PCT/US2004/030633, mailing date Jan. 21, 2005, 4 pages.

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