Non-return valve

Details Non-return valve Non-return valve

1975-05-30

1976-11-23

Schwadron, Martin P.

Fluid handling

Line condition change responsive valves

Line flow effect assisted

137536, 137220, G05D 1610, F16K 2100

Patent

active

039930939

ABSTRACT:
This invention relates to a non-return valve or check valve in the form of a piston-type slide-valve comprising a substantially rotationally-symmetrical outer housing and a likewise substantially rotationally-symmetrical inner housing which is arranged centrally therein and which is of streamline configuration, a free annular space serving as a flow passage between the outer and the inner housings which annular space is subdivided by connecting webs and can be shut off by a piston which can be extended coaxially from the inner housing, under spring pressure, against the direction of flow of a flow medium.

REFERENCES:
patent: 1802720 (1931-04-01), Junkers
patent: 3134394 (1964-05-01), Ohta
patent: 3545483 (1970-12-01), Valdenazzi
patent: 3630228 (1971-12-01), Turner

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