This creates a kind of check valve apparatus of Shui nationality articles,Its group is set in aquarium,Comprising: a valve pocket and one valve body is scratched,The valve pocket have a link slot,One valve chamber and a venthole,The valve chamber is connected between the what link slot and the venthole,The link slot supplied gas can enter,Then supplied gas can be discharged the venthole； This is scratched valve body and sets in the what valve chamber,It has one of connection aperture and a slender holes,The aperture corresponds to the link slot,The slender holes correspond to the venthole,The slender holes and what are passed in and out without gas remains closed state often,It can be opened when there is gas to enter with the expanded support slender holes and allow gas to enough discharges.本創作一種水族用品之單向閥裝置，其組設水族箱內，其包括：一閥套及一撓閥體，該閥套具有一連接槽、一閥室與一出氣孔，該閥室連通於該連接槽與該出氣孔之間，該連接槽供氣體可以進入，該出氣孔則供氣體可以排出；該撓閥體設於該閥室內，其具有連通之一開孔與一長細孔，該開孔對應該連接槽，該長細孔對應該出氣孔，該長細孔且於無氣體進出時常保持為閉合狀態，當有氣體進入時可以擴撐該長細孔打開使氣體能夠排出。
