초록 ▼

An asymmetrical check valve has an inlet end, a transition part and an outlet end, with a pair of vertical lips facing one another. The lips may be flat or they may be curvilinear. The check valve is asymmetric about a horizontal longitudinal plane through the check valve. The bottoms of the transit

An asymmetrical check valve has an inlet end, a transition part and an outlet end, with a pair of vertical lips facing one another. The lips may be flat or they may be curvilinear. The check valve is asymmetric about a horizontal longitudinal plane through the check valve. The bottoms of the transition part and outlet end may be aligned, with a major portion of the lips extending above the horizontal plane. It is thus possible to install conventional or wide bill check valves in installations with little or no clearance between the outlet end and ground level.

대표청구항 ▼

[ We claim:] [1.] A check valve, comprising:an upstream inlet end and a downstream outlet end;a transition part located between the inlet end and the outlet end;said check valve being asymmetrical about a horizontal longitudinal plane through the check valve, said horizontal longitudinal plane coinc

[ We claim:] [1.] A check valve, comprising:an upstream inlet end and a downstream outlet end;a transition part located between the inlet end and the outlet end;said check valve being asymmetrical about a horizontal longitudinal plane through the check valve, said horizontal longitudinal plane coincident with a centerline of the inlet end;said outlet end comprising a pair of vertical lips facing one another; andat least a portion of a top outer surface on at least one of the transition part and the outlet end being upwardly inclined in an outflow direction through the check valve.