CPC G05D 9/02 (2013.01) [B65D 7/045 (2013.01); B65D 7/40 (2013.01)] | 4 Claims |
1. A liquid storage device comprising:
a sealed liquid storage container;
a floatable funnel inside of said liquid storage container having a top and bottom opening, an internal standpipe attached to the bottom opening within a base of the floatable funnel;
a flexible discharge line connected to the bottom opening of said floatable funnel and extends to a port on a side of an interior of said liquid storage container;
a shut off valve on an exterior of said liquid storage container, connected to an end of said flexible discharge line via the port;
the liquid storage container includes intermittent indentations at varying depths inside said liquid storage container, and at least two adjustable rods are attached across the intermittent indentations at a desired depth, wherein the floatable funnel rests on between the at least two adjustable rods when the floatable funnel completes a drainage cycle.
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