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one way valve bag

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Product Summary

One way valve is to provide one-way valve of a sealed bag to expel the dead air out from the bag with a preferred air-tight effect. The one-way valve comprises a valve seat, a diaphragm mounted inside the valve seat, the diaphragm is also in linear contact with a projected annular ring, a stop device pressed on the diaphragm, a valve cap screwed to the valve seat and pressed the stop device.
Said valve cap has hooks adapted to apertures of the seat, thus keep the cap on the seat not to be separated from thereof. Moving upward or downward the valve cap, the stop device can be controlled to press onto the diaphragm tightly or become loose. An airtight effect is achieved with a pressure exerted between the stop device and the annular ring. Or one-way valve can expel the dead air through the air pores under diaphragm.

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