The invention mainly discloses a fixable flow control device, which comprises a flow control unit and a fixed unit.The flow control unit includes a pipe body and a regulating valve.In the new model, the flow rate and switch of water flow are controlled by the new regulating valve, so that the user can conveniently control the flow rate and speed of water flowing out of the fish tank.Moreover, the flow control unit can be firmly fixed on the edge or surface of a bucket through the new fixed unit.In this way, the fixed flow control device enables the user to easily change the water in the fish tank and conveniently control the water flow out of the fish tank.It is worth noting that when the fixed flow control device is used, the outflow of water flow can be controlled by turning the regulating valve, and the internal air does not need to be discharged again.本新型主要揭示一種可固定式流量控制裝置，包括: 一流量控制單元以及一固定單元。其中，該流量控制單元包括一管體以及一調節閥。於本新型中，透過本新型之調節閥控制水流的流量與開關，以令使用者可以方便地控制流出魚缸中的水流量與速度。並且，透過本新型之固定單元，令該流量控制單元被穩固地固定於一水桶之口緣處或一表面上。如此，該可固定式流量控制裝置令使用者可輕鬆地更換魚缸中的水，同時方便地控制流出魚缸的水流量。值得說明的是，使用該可固定式流量控制裝置時，透過轉動調節閥即可控制水流的流出，不必再次排出其內部空氣。
