Antisiphon devices are required on exterior sillcocks shown in photo

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

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

Faucets must adhere to water conservation regulations. In america, bath tub basin faucets are now limited by 2 gal (7.6 L) of normal water per minute, while tub and shower faucets are limited to 2.5 gal (9.5 L).

Faucets run an average of eight minutes per capita each day (pcd), relating to a study by the North american Water Works Connection Research Foundation completed in 1999 that was predicated on drinking 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 fittings, faucets moved 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. Tap use is also negatively related to the amount of persons working outside the home and is lower for those who have an automatic dishwasher.The developing process for faucets has become highly automated, with computers handling most of the machines. Output and efficiency have thus better over the years.

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