Ball valve with a single piece ball-stem and an integrated...

Details Ball valve with a single piece ball-stem and an integrated... Ball valve with a single piece ball-stem and an integrated...

2006-07-25

2006-07-25

Jacyna, J. Casimer (Department: 3751)

Valves and valve actuation

Rotary valves

Ball valve

C251S315130, C251S315140, C251S315160

Reexamination Certificate

active

07080822

ABSTRACT:
A two piece side split ball valve with internal corrosion resistant plastic lining (4, 5), with an integral actuator mounting flange (30) for easier, cheaper & direct mounting of any standard actuator, with a single piece ball-stem (3, 7) for accurate control of the rotation & positioning of the ball (3), with energized seat rings (8, 9) for bubble tight shut-off and with means (14, 15) to prevent cold flow of lining sealing faces (16, 17) of the two body halves (1, 2) having metal to metal contact.

REFERENCES:
patent: 2963260 (1960-12-01), Siravo
patent: 3037738 (1962-06-01), Jackson et al.
patent: 3630224 (1971-12-01), Kalvelage
patent: 4696323 (1987-09-01), Iff
patent: 5540414 (1996-07-01), Giordani et al.
patent: 5634486 (1997-06-01), Hatting et al.
patent: G 89 10 895.7 (1989-09-01), None
patent: 44 14 716 (1995-07-01), None

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