Abstract: A water-saving diffuser for which a user perceives a relatively higher flow rate than the actual flow rate includes a lower chamber portion housing a distributor disk therein, and an accelerator portion attached to the lower chamber portion, the accelerator portion having a plurality of apertures for producing a multiple-stream output from the water-saving diffuser. A central aperture of the distributor disk can be custom-tailored to produce a specific flow rate for a given water supply pressure. The water-saving diffuser may be used in a water distribution system to provide a predetermined uniform flow rate to all regions of a single- or multi-story building.

Abstract: A variable-demand flow regulator regulates water flow into a building based on variable water supply and variable demand pressures. When water demand increases downstream of the variable-demand flow regulator, the water pressure decreases on the downstream side of the piston valve and a piston of a piston valve moves in the downstream direction. This results in an increased number of access holes being exposed to water flow, thus allowing a higher flow of water when water demand increases. An adjustable bleeder valve controls the flow characteristics of the regulator by affecting the movement of the piston.

Abstract: A water-saving diffuser for which a user perceives a relatively higher flow rate than the actual flow rate includes a hollow barrel for housing an accelerator disk having a plurality of apertures, a distributor disk having a central aperture of a predetermined size, and a chamber ring interposed between the distributor disk and the accelerator disk to define a chamber region therebetween. The central aperture of the distributor disk can be custom-tailored to produce a specific flow rate for a given water supply pressure. The water-saving diffuser may be used in a water distribution system to provide a predetermined uniform flow rate to all regions of a multi-story building.

Abstract: An automatic variable demand flow regulator regulates water flow into a building based on variable supply and demand pressures. The regulator is positioned between a building and a water supply meter for the building. The regulator includes a piston that moves in response to pressure at both the supply side and the demand side of the regulator, and the piston is brought to rest when equilibrium is reached and the supply side and demand side pressures are balanced. When demand is low the piston is in a closed position and flow through the regulator is minimal. When demand increases to a condition where flow through the supply side of the regulator cannot provide equal pressures on both the supply and demand sides, the piston will automatically move toward the demand side to convey additional water to the demand side until the pressures are equalized on both sides of the piston.