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A faucet is a tool for delivering normal water from a domestic plumbing system. It could consist of the following components: spout, handle(s), lift fishing rod, cartridge, aerator, combining chamber, and drinking water inlets. Once the handle is turned on, the valve starts and handles this inflatable water stream adjustment under any drinking water or heat range condition. The faucet body is usually made of brass, though die-cast zinc and chrome-plated plastic are used also.

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

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

Faucets run typically eight minutes per capita per day (pcd), matching to a study by the American Water Works Association Research Foundation completed in 1999 that was predicated on water use data gathered from 1,188 residences. In daily pcd use indoor 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 fixtures, faucets shifted up to second at 11 gal (41.6 L) pcd. Sink use was related to household size. The addition of teens and adults increases water use. Tap use is also adversely related to the number of persons working outside the home and is leaner for many who have an programmed dishwasher.The manufacturing process for faucets is becoming highly programmed, with computers handling most of the machines. Productivity and efficiency have thus advanced over time.

Efficiency and efficiency have improved over the years. The basic process includes forming the key 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.