Float valve control

In a liquid level control device for monitoring the level of water in a steam generating tank between predetermined upper, intermediate and lower levels, said tank equipped with a valve for introducing water into said tank and valve means for introducing heat energy to the water to generate steam, comprising:

• (a) a glass gauge tube adapted to be vertically mounted exteriorally of said tank;
• (b) a top and bottom cover covering the ends of said glass gauge tube, said bottom cover including an opening for communicating with said liquid in said tank and said top cover including an opening for communicating with the steam generated in said tank;
• (c) upper and lower magnetic float means mounted co-axially within said glass gauge tube;
• (d) said upper magnetic float means including means to activate said water valve when said water is in the region of said predetermined intermediate level so as to introduce water into the tank until said water is in the region of said predetermined upper level, and to deactivate said water valve and stop the introduction of water into the tank when said water is in the region of said predetermined upper level;
• (e) said lower magnetic float means is adapted to continuously maintain the application of heat energy during said introduction of water at said intermediate level, and said lower magnetic float means is adapted to activate said heat energy valve means to stop the application of heat energy in said steam generating tank when said water is in the region of said predetermined lower level.