Watermaster
The Watermaster® Single Point Battery Watering Vent Cap, (Cap) is the heart of the Network Watering
System™. The Cap consists of a small bowl above the cell and a Level Sensing Tube (LST) which protrudes
beneath the bowl into the battery cell. The Watermaster® Cap has absolutely no moving part stopping water
flow into the cell.
The Cap uses only the natural reliable force of gravity to direct water into the cell,the universal tendency of liquids to seek one level to compress air in the Level Sensing Tube,and the surface tension of water to cause shut off. The electrolyte level is determined by the length of the Level Sensing Tube
The Battery Setup
At the bottom of the bowl is a small hole allowing water to flow into the cell. A plate immediately above the hole maintains an air tight water seal,preventing the air in the Level Sensing Tube (LST),from escaping upwards. As soon as the rising electrolyte reaches the bottom of the tube the air pressure within it increases, preventing further flow of water through the hole.
Certainly,Watermaster® does have a float activated valve,but this only prevents water from overflowing from the bowl when the flow into the cell has been previously stopped by the rising electrolyte and surface tension seal. The float activated valve does not play any significant part in determining the flow of water to the cell.
The float and valve only contact with the incoming water and are never exposed to the sticky sludge in the electrolyte. Since only low pressure (2psi) is used the electrolyte cannot be forced out of the cell which occurs with high-pressure systems. The design is patented worldwide.The millions of Watermaster® Caps in operation have proven the products’ reliability. Kits are available for all size batteries from small Golf-Cart size through large Mining, and EV batteries.
The Caps work reliably in Freezer applications. A Flame Arrestor may be added for Stationary Applications.