April, 2014: Residential installation for garden drip irrigation use. Designed and installed by Rainwater Harvesting Supply Company, LLC.
Specifications: (2) Rainbox 75 gallon rectangular storage tanks; (4) 2” knife valves. The Rainbox storage tanks are provided with integral inlet screen filters and hose spigots. The installation incorporates a unique configuration of valves and piping for the overflow water. The owner requested the ability to control the water level in the tanks as well as two overflow water path directions. By varying the “open/close” condition of specific combinations of the knife valves, the water level in the tank can be maintained full / ½ / empty. A choice of overflow into an existing in-ground drain system or over the ground surface is similarly selected.