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

The majority of personal faucets are sole 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 plastic 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 laws. In america, bathtub basin faucets are actually limited to 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 each day (pcd), regarding to a study by the North american Water Works Connection Research Groundwork completed in 1999 that was based on water use data gathered 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. Faucet use was strongly related to household 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 automatic dishwasher.The production process for faucets has become highly automated, with computers controlling most of the machines. Productivity and efficiency have thus better over time.

Production and efficiency have improved upon over the years. The basic process involves forming the key body of the faucet (some-times including the spout if no swivel is necessary), applying a finish, and then assembling the various components, accompanied by product packaging and inspection. The faucet industry has also been influenced by environmental regulations, that have required special processes to be developed.