초록 ▼

A ball valve of the type comprising a housing having a ball mounted for 90°rotation therein between open and closed valve positions utilizes a ball whose exterior surface is shaped to define two noncoaxial hemispherical surface portions of like size and shape that are integrated with one another and

A ball valve of the type comprising a housing having a ball mounted for 90°rotation therein between open and closed valve positions utilizes a ball whose exterior surface is shaped to define two noncoaxial hemispherical surface portions of like size and shape that are integrated with one another and offset from one another along a plane that is oriented at substantially 45°to an axially directed bore in the ball. The hemispherical surface portions of the ball are in touching engagement with a pair of annular seat rings in the housing in the open position of the valve, and engage the seat rings with increasing force as the ball is rotated from the open position to the closed position of the valve.

대표청구항 ▼

A ball of balanced design for use in a ball valve of the type wherein the valve is opened and closed by rotation of the ball, relative to a pair of spaced annular seat ring mounted in a valve housing, through substantially 90°about an axis of rotation that extends through said ball between diametric

A ball of balanced design for use in a ball valve of the type wherein the valve is opened and closed by rotation of the ball, relative to a pair of spaced annular seat ring mounted in a valve housing, through substantially 90°about an axis of rotation that extends through said ball between diametrically opposed first and second points on the outer surface of said ball, said ball being of generally spheroidal configuration and having a bore extending axially therethrough at right angles to said axis of rotation, said ball being truncated at the opposing ends of said bore whereby the width of said ball along said bore is less than the height of said ball between said first and second points, and the outer surface of said ball consisting of two three-dimensionally shaped surface portions that are integrated with and offset from one another to define a pair of diametrically opposed curved shoulders of like configuration that extend along opposite sides of said ball between the top and bottom of said ball.