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A faucet is a device for delivering drinking water from a plumbing related system. It could consist of the next components: spout, handle(s), lift rod, cartridge, aerator, combining chamber, and drinking water inlets. Once the handle is fired up, the valve starts and handles water circulation adjustment under any temperature or water condition. The faucet body is constructed of brass, though die-cast zinc and chrome-plated plastic are used also.

Nearly all personal faucets are dual-control or solo cartridge faucets. Some single-control types use a plastic or metal core, which operates vertically. Others use a steel ball, with spring-loaded plastic seals recessed into the faucet body. The less costly dual-control faucets contain nylon cartridges with plastic seals. Some faucets have a ceramic-disc cartridge that is much more durable.

Faucets must comply with water conservation regulations. In the United States, bath tub basin faucets are actually limited by 2 gal (7.6 L) of water per minute, while bathtub and tub faucets are limited to 2.5 gal (9.5 L).

Faucets run typically eight minutes per capita each day (pcd), corresponding to a study by the American Water Works Connection Research Base completed in 1999 that was predicated on drinking water use data collected from 1,188 residences. In daily pcd use indoor drinking water use was at 69 gal (261 L), with faucet use third highest at 11 gal (41.6 L) pcd. In residences with water-conserving fittings, faucets relocated up to second at 11 gal (41.6 L) pcd. Faucet use was related to household size. The addition of teens and adults increases water use. Faucet use is also negatively related to the number of persons working outside the home and is leaner for individuals who have an automatic dishwasher.The developing process for faucets has become computerized highly, with computers controlling almost all of the machines. Productivity and efficiency have thus better over time.

Productivity and efficiency have advanced over the years. The basic process contains forming the main body of the faucet (some-times including the spout if no swivel is necessary), applying a finish, and assembling the various components then, followed by inspection and packaging. The faucet industry has also been influenced by environmental regulations, which have required special processes to be developed.