Constant flow liquid supplier

A constant flow liquid supplier comprising:

• a body including a cavity defined and adapted to contain liquid;
• a cover attached to a top of the body to close the cavity, the cover including:
• an opening centrally defined in the cover;
• an inlet nipple and a sleeve respectively extending perpendicular upward from the cover, the inlet nipple adapted to be connected to a liquid source and the sleeve having a through hole defined to communicate with the cavity;
• and
• an outlet assembly partially received in the cavity in the body, the outlet assembly including:
• a floating member including a through hole centrally defined in the floating member and an air tank formed in the floating member so that the floating member is adapted to float on a liquid surface due to the air tank;
• and
• an inverted U-shaped siphon including a first end forming an inlet and a second end forming an outlet, the first end of the inverted U-shaped siphon inserted into the body through the through hole in the sleeve and secured in the through hole in the floating member of the outlet assembly, the outlet of the inverted U-shaped siphon being lower than that of the inlet of the inverted U-shaped siphon relative to the liquid surface, the inverted U-shaped siphon having a diameter lightly smaller than that of the through hole in the sleeve so that a vertical section of the inverted U-shaped siphon is movably received in the through hole in the sleeve.