Ball valve

Details Ball valve Ball valve

1997-09-24

1999-07-27

Fox, John

Valves and valve actuation

Rotary valves

Ball valve

25131508, 222368, F16K 506

Patent

active

059276878

ABSTRACT:
A ball valve for shutting off pipelines carrying liquid, gaseous and solids-laden media, particularly those of large nominal diameters, includes a housing containing a ball provided with at least one bore and supported in a rotatable fashion in the housing by means of a spindle, annular seals located before and after the ball in the direction of flow in the housing which seal off the inlet side from the outlet side, one additional annular seal which rests upon the surface of the ball in the housing in each of the planes perpendicular to the spindle axis above and below the bore, as well as above and below the seals which are placed before and after the ball in the flow direction, in such a way that each of the planes which are spanned by them and are parallel with each other is perpendicular to the planes spanned by the sealing rings placed before and after the ball.

REFERENCES:
patent: 1524585 (1925-01-01), Shutterly
patent: 2816693 (1957-12-01), Greaves et al.
patent: 3109623 (1963-11-01), Bryant
patent: 3214135 (1965-10-01), Hartmann
patent: 3275025 (1966-09-01), Kowalski
patent: 3556471 (1971-01-01), Paul, Jr.
patent: 4441524 (1984-04-01), Mese

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