Plug valve having a seal boss

Details Plug valve having a seal boss Plug valve having a seal boss

2006-12-14

2008-11-18

Bastianelli, John (Department: 3753)

Valves and valve actuation

With means to increase head and seat contact pressure

Rotary valve

C251S309000, C251S317000

Reexamination Certificate

active

07451959

ABSTRACT:
A fluid control valve utilizes a rotatable plug valve member mounted in a fluid passage to control the flow of fluids. Two segments are placed on each side of the plug valve member within a recess located between the plug valve member and the body of the fluid passage. The outer surface of the segments includes an elastomeric seal and metal annular boss, which acts as a stop to limit deformation of the seal when the valve is closed and under pressure.

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