Patent ID: 8393396

Claim:
A valve assembly for subterranean use, comprising: relatively movable housing components having a flow passage therethrough for connection to a tubular string; a rotatable valve member pivoting on a support extending from a first of said components, wherein rotation of said first component operates said valve member, and said support located on a first side of said rotatable valve member, said first component being tubular and having an inner conforming surface to said rotatable valve member, said support located in said conforming surface and said conforming surface surrounds said rotatable valve member said support out of contact with a second of said components that is located on the opposite side of said rotatable valve member from said first component without overlapping said first component, said second component further comprising an associated operator for said rotatable valve member actuated by said relative housing movement for transmitting a force to said valve member at a spaced location from said support for movement between an open and a closed position with respect to said flow passage.