NESTED RETAINING VALVES OF THE TYPE OF DUCK PEAK.

摘要

A check valve assembly, comprising: a first duckbill check valve (10) having an inlet (18) at one end, an elastomeric tip (14, 15, 16) formed at an opposite end and a neck (13) between them, the tip having opposite edges (14, 15) and an outlet (16) that can be opened by a flexion that separates the edges (14, 15); a second duckbill check valve (10) having an inlet (18) at one end, an elastomeric tip (14, 15, 16) formed at an opposite end and a neck (13) between them, also having said tip of the second duckbill check valve opposite edges (14, 15) and an outlet that can be opened by a flexion that separates the edges; wherein the tip (14, 15, 16) of the first duckbill check valve is telescopically plugged and retained at the inlet (18) of the second duckbill check valve, the edges (14, 15 being) ) of the first valve capable of moving outwardly into the inlet (18) of the second valve, characterized in that the tip of the first duckbill check valve (10) is held in a joint configuration nested with the inlet of the second duckbill check valve by means of an automatic adjustment connection between the neck (13) of the first duckbill check valve and the inlet (18) of the second duckbill check valve.