15. An automatic siphon tube level control device for a
reservoir subject to being ?lled by a water supply comprising a
siphon tube adapted to be disposed with the inlet in the water
contained by the reservoir and an outlet extending outside the
reservoir to draw water from the reservoir in a siphon action, a
valve at the outlet end of the tube for regulating the liquid ?ow
through the tube, the valve being arranged so that the liquid
?owing within the tube acts to close the valve, and a level
sensing, valve-actuating mechanism coupled to the valve to move the valve toward the closed position with the liquid