Annular piston valve

Details Annular piston valve Annular piston valve

1981-06-22

1983-11-22

Michalsky, Gerald A.

Fluid handling

Larner-johnson type valves; i.e., telescoping internal valve...

Line condition change responsive

137529, 137535, 137536, F16K 1502

Patent

active

044163010

ABSTRACT:
A valve construction wherein a streamlined flow diverter is centered within a cylindrical valve body. A slidable annular seat ring is biased upstream to seal against a seating surface on the inwardly tapered downstream side of the flow diverter and is biased by fluid pressure so that the valve opens when line pressure exceeds the control pressure. The inner contour of the retractable seat ring and the tapered outer contour of the downstream side of the flow diverter are such that the minimum flow area between them occurs a short distance downstream of the seating surface and is thereafter maintained or slightly increased gradually to an abrupt termination of the tapered surface.

REFERENCES:
patent: 2416787 (1947-03-01), White
patent: 2798446 (1957-07-01), Endrezze
patent: 3605788 (1971-09-01), Brown
patent: 4116212 (1978-09-01), Cooper
patent: 4117859 (1978-10-01), Illy
patent: 4137933 (1979-02-01), Culpepper

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