Patent ID: 7971609
Filing Date: 2011-07-05
Classification: E03C

Abstract:
1. A water saving device for use at or near a water outlet, the device comprising: a. an enclosure, the enclosure defining an internal volume and an internal thread, the enclosure being configured for an attachment to the water outlet; b. a first water flow regulating element disposed within the internal volume, the first water flow regulating element having a largest outside circumference, the largest outside circumference of the first water flow regulating element defining an external thread, the external thread of the first water flow regulating element and the internal thread of the enclosure being in a threaded engagement, the first water flow regulating element having a location with respect to the enclosure, the location being selectable by the threaded engagement; c. a second water flow regulating element disposed at a location within the internal volume and downstream of the first regulating element, the location of the second water flow regulating element being fixed with respect to the enclosure; d. a substantially airtight chamber defined by the internal volume of the enclosure and bounded by the first regulating element in an upstream direction and the second regulating element in a downstream direction; e. wherein a height of the substantially airtight chamber is defined by the selectable location of the first water flow regulating element and the fixed location of the second water flow regulating element, the height being adjustable; and f. wherein all of one or more water flow regulating parts of the first and second regulating elements are made from substantially solid non-deformable material.