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A faucet is a tool for delivering water from a plumbing system. It could consist of the next components: spout, handle(s), lift up pole, cartridge, aerator, mixing chamber, and water inlets. Once the handle is turned on, the valve opens and manages the water flow adjustment under any temperature or normal water condition. The faucet is usually made of brass, though die-cast zinc and chrome-plated plastic are also used.

The majority of residential faucets are dual-control or solo cartridge faucets. Some single-control types use a plastic or metal core, which operates vertically. Others use a metallic ball, with spring-loaded silicone seals recessed in to 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 adhere to water conservation laws and regulations. In the United States, bath basin faucets are now limited to 2 gal (7.6 L) of drinking water per minute, while shower and tub faucets are limited by 2.5 gal (9.5 L).

Faucets run an average of eight minutes per capita per day (pcd), regarding to a study by the North american Water Works Association Research Foundation completed in 1999 that was predicated on normal water use data collected from 1,188 residences. In daily pcd use indoor normal 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 accessories, faucets relocated up to second at 11 gal (41.6 L) pcd. Sink use was strongly related to home size. The addition of teens and adults increases water use. Faucet use is also negatively related to the amount of persons working outside the home and is leaner for those who have an computerized dishwasher.The processing process for faucets has become highly programmed, with computers managing the majority of the machines. Productivity and efficiency have thus better over time.

Output and efficiency have upgraded over the years. The essential process involves forming the key body of the faucet (some-times like the spout if no swivel is necessary), applying a finish, and then assembling the many components, accompanied by inspection and packaging. The faucet industry in addition has been impacted by environmental regulations, which have required special processes to be developed.