Hansgrohe’s Talis C faucets utilize EcoRight technology to limit flow rates to 1.35 or 1.5 gpm.
TOTO USA's Drake II HETs feature a 1.28-gpf Double Cyclone Flush Engine.
Mansfield Plumbing Products’ Enso Suite includes an elongated dual-flush HET that uses only 1.1 or 1.6 gpf.