FIELD: packaging industry.
SUBSTANCE: invention relates to check valves. Compressible container 10 includes container 11 and attachment 12 connected to inlet part 11a of container 11. Nozzle 12 is made with check valve 15, which is closed in an unloaded state and which blocks fluid flow from the outlet side and enables passage of fluid medium from the inlet side. Check valve 15 opens when resilient valve element 18 elastically deforms in two stages under action of fluid medium pressure from inlet side (from side of container 11).
EFFECT: technical result is prevention of backflow and release of fluid medium with unintentional application of pressure in the right direction.
17 cl, 7 dwg
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