Design inclueds 3 parts, button and gasket should be printed separately.
Main body should be printed without supports, gasket should be printed with soft TPU.
After print use small knife to cut included supports that are supporting button mechanism and use small drop of superglue to put button in place.
Feel free to remix model to your use case using included .f3d / .step files
The author remixed this model.
Extended original version with addition of adapting it to hose holder, splitting release button into two parts, with an additional gasket printed tiwh soft TPU.