Ball valve

Details Ball valve Ball valve

1991-10-18

1993-08-03

Fox, John C.

Valves and valve actuation

Rotary valves

Ball valve

251317, F16K 506

Patent

active

052322009

ABSTRACT:
An improved ball valve for fluids, comprising a body composed of a main and lateral body which defines a longitudinal duct in which there is an obstructing ball having a cylindrical perforation, so that said ball may rotate around a stem joined to it so as to align said cylindrical perforation with said longitudinal duct; said ball being supported by two ring-shaped seats. Whereby the improvements are centered on the independency of the present functions of the seats rings: as ball supports and sealing elements; said rings being left, in accordance with the invention, related solely to the ball-supporting function and introducing a pair of elastic rings (O-rings) which perform the role of sealing elements.

REFERENCES:
patent: 2839266 (1958-06-01), Kaiser
patent: 2912219 (1959-11-01), Clade
patent: 2963262 (1960-12-01), Shafer
patent: 3083945 (1963-04-01), Shafer et al.
patent: 3462120 (1969-08-01), Priese
patent: 3556471 (1971-01-01), Paul, Jr.
patent: 3677514 (1972-07-01), Mencarelli
patent: 4141538 (1979-02-01), Bake et al.
patent: 4177972 (1979-12-01), Legris

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