Patent ID: 6832621
Filing Date: 2004-12-21
Classification: B08B,F16K,G01F,Y10T

Abstract:
A ball valve assembly comprising,a ball valve body having an inner chamber, an inlet port, an outlet port in communication with said chamber for fluid flow therethrough, and a transmitter side flange and a tank side flange for mounting said ball valve assembly, each said flange having a horizontal centerline and at least two upper bolt holes located about forty-five degrees above said centerline and at least two lower bolt holes located about forty-five degrees below said centerline, a ball valve member mounted in said chamber, said ball valve member having an inner surface forming a through passage, an outer surface including a first sealing face and a second sealing face, and a purge passage having a first end formed in said inner surface and a second end formed in said second sealing face, and, means for selectively rotating said ball valve member between an open position wherein said inlet port, said outlet port, and said through passage are in fluid alignment, and a closed position wherein said first sealing face is in sealing engagement with said inlet port to prevent fluid flow therethrough and said second sealing face is in sealing engagement with said outlet port.