Collapsible ball valve

Details Collapsible ball valve Collapsible ball valve

1975-03-03

1976-07-20

Cline, William R.

Fluid handling

Line condition change responsive valves

Direct response valves

13753311, 166225, F16K 1514

Patent

active

039701069

ABSTRACT:
A collapsible ball check valve for use in high pressure pneumatic devices to prevent a backflow upon loss of the high pressure while, simultaneously, not requiring a pressure loss to operate the check valve. The pressure of the fluid causes the hollow ball to collapse inwardly, thereby allowing fluid to continue to flow through the flow passage around the collapsed ball valve and through the valve seat which is provided with a plurality of inwardly sloped passages to allow fluid flow therethrough upon collapse of the hollow ball. Upon losing pressure in the flow passage, the ball valve resumes its normal shape to press against a flanged opening in the flow passage thereby preventing a reverse flow of fluid.

REFERENCES:
patent: 2536836 (1951-01-01), Bowling
patent: 3096825 (1963-07-01), Clark, Jr.
patent: 3367362 (1968-02-01), Hoffman
patent: 3547355 (1970-12-01), Salazar

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