D.C. Power Products
5533 Collins Blvd
Austell, GA30106

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 Cap has absolutely no moving parts 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 LST and the surface tension of water to cause shut off. The electrolyte level is determined by the length of the LST.

At the bottom of the bowl is a small hole allowing water to flow into the cell and a plate immediately above the hole which maintains an air-tight water seal, preventing the air in the 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 the Watermaster Cap 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 have contact with the incoming water and are never exposed to the sticky sludge in the electrolyte. The design is patented worldwide. The millions of caps in operation have proven the product's 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, and a flame arrestor is available for large stationary batteries.

The Watermaster Cap has a port which enables you to use a special Hydrometer to check the electrolyte without removing the cap. This time-saving feature also improves safety by eliminating potentially hazardous exposure to acid.
 

For more information call: DC Power Products at 770-948-2593 or 706-651-8338.

 

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