CHECK VALVE Russian patent published in 2015 - IPC E21B34/08 F16K15/04 

Abstract RU 2558543 C1

FIELD: machine building.

SUBSTANCE: in check valve containing a body, shutoff element and seat, the compressed spring is located across stroke of the shutoff element, and the shutoff element pressing to the seat is ensured by the compressed spring deflection.

EFFECT: invention ensures increased energy efficiency of the submersible pump equipment.

4 dwg

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RU 2 558 543 C1

Authors

Loginova Ol'Ga Iosifovna

Dates

2015-08-10Published

2014-06-30Filed