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Conventional ball valves 2011-12-26
However, conventional ball valves are obtained by machining cast pieces, or by machining stainless steel blocks. In either case, the machining processes require skilled labor and substantial time peri
A ball valve chamber with an entrance and exit 2011-12-23
The present invention is also a ball valve in which a valve chamber with an entrance and exit communicating with each other in a casing is formed, a valve ball with a circulation hole is provided in t
A valve ball with a circulation hole 2011-12-22
The present invention is also a ball valve in which a valve chamber with an entrance and exit communicating with each other in a casing is formed, a valve ball with a circulation hole is provided in t
A valve ball with a circulation hole 2011-12-21
The present invention is also a ball valve in which a valve chamber with an entrance and exit communicating with each other in a casing is formed, a valve ball with a circulation hole is provided in t
A valve ball with a circulation hole 2011-12-20
The present invention is a ball valve in which a valve chamber with an entrance and exit communicating with each other in a casing is formed, a valve ball with a circulation hole is provided in the va
Ball valve provides improved sealing 2011-12-19
Described herein is a ball valve which provides improved sealing. The ball valve has a ball and a dual ball seat arrangement, such that the ball seat arrangement provides two points of sealing against
A spherical ball mounted 2011-12-16
A valve housing having a flow passage therethrough; a spherical ball mounted in said valve housing for movement between an open position and a closed position; tubular caps having connected means for
An upper ball 2011-12-15
A housing having an upper housing and a lower housing, said lower housing having an inlet and an outlet;
