| 摘要 |
<p>A check valve assembly, comprising: (a) A first duckbilled check valve having an inlet at one end, an elastomeric bill formed at an opposite end, and a neck there between, the bill having opposed lips and an outlet openable by a flexing of the lips apart; (b) Wherein the bill of the first duckbill check valve is telescoped into and retained in the inlet of the second duckbill check valve with the lips of the first valve able to move outward inside the inlet of the second valve; and (c) Wherein the bill of the first duckbill check valve is held in a nested together configuration with the inlet of the second duckbilled check valve by a snap fit connection between the neck of the first duckbilled check valve and the inlet of the second duckbilled check valve.</p> |
