This is 3d printable water tap. 3d editable STEP file format also atached. You have to make custom oring to prevent water leackage. You can make with metal materials. You have to chose rubber pad for valve inside. Valve attached with the screw. The pipe thread diameter of the tap is 19 mm. It has 6 individual parts.

Custom sized and designed tap possible, you have to contact with me for more details.

Thanks,Mahbub