Arcuate swing check valve

Details Arcuate swing check valve Arcuate swing check valve

1981-11-09

1983-10-04

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

137527, 1375278, F16K 1503

Patent

active

044073259

ABSTRACT:
A check valve for controlling the flow of fluid in a conduit so that flow in one direction is unimpeded and flow in the opposite direction is prevented, providing in the open position, an unimpeded flow passage permitting the passage through the valve of material separators or cleaning tools. An arcuate, saddle shaped valve sealing element developed from a tubular member is pivotable 90 degrees from a closed position in engagement with a valve seat to an open position where the sealing element is in conformal configuration with the inner wall of the valve body presenting a free flow path with no obstruction to the passage of solid objects through the valve. All elements of the valve are formable from tubular elements, eliminating the need for special castings and reducing the machining required to fabricate a valve.

REFERENCES:
patent: 385292 (1888-06-01), Baltzley
patent: 1000719 (1911-08-01), Cram
patent: 1926759 (1933-09-01), Wallman
patent: 2913001 (1959-11-01), Maslow
patent: 3937240 (1976-02-01), Nanny
patent: 4034780 (1977-07-01), Horvath

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