Abstract: Within a cylindrical barrel to be secured to the water faucet are a basket surrounding a mixing chamber, a diffuser overlying the mixing chamber and forming a diffusing chamber having peripheral openings for flow of water to the mixing chamber, and a pressure-compensating flow controller plug having a control opening for admitting water from said faucet to the diffusing chamber. The flow controller plug has a reduced lower section defining a head and the diffuser has an upward annular flange defining a socket. When the head and socket are engaged, the plug and diffuser are held together as an assembly. The margin of the upper section of the plug forms a seal between the barrel and faucet.

Abstract: The faucet includes a unitary valve stem, the lower end of which is tapered and sits in a cup-shaped valve element for low-friction connection and easy rotary adjustment of the faucet outlet.

Abstract: This faucet has a base assembly with an air break module for the brine waste from a reverse-osmosis filter. The break outlet at the bottom of the break pocket has an angled fitting which aims the downstream waste up out of the base assembly in event of a backup. The faucet includes a unitary valve stem, the lower end of which is tapered and sits in a cup-shaped valve element for low-friction connection and easy swiveling adjustment of faucet outlet. Finally, the faucet is installed with the use of a pair of interfitting plates, one, the base plate, secured to the bottom of the faucet base, the other, the attachment plate, secured to the sink around the access hole in the sink. The attachment plate has upstanding outward ears which fit into tapered openings in the base plate. When the base is turned, for 20.degree. or so, the ears wedge against the sides of the openings respectively to give a tight fit, securing the faucet in the sink.