Published at Friday, 28 June 2019. Bathroom. By Images Collector.
Of three manufacturers in North America, Moen and American Standard use cartridges (Moens being O-ring based, American Standards being ceramic), while Delta uses rubber seats facing the cartridges. Each design has its advantages: Moen cartridges tend to be easiest to find, American Standard cartridges have nearly infinite lifespan in sediment-free municipal water, and Deltas rubber seats tend to be most forgiving of sediment in well water.
Documented early plumbing systems for bathing go back as far as around 3300 BC with the discovery of copper water pipes beneath a palace in the Indus Valley Civilization of ancient India; see sanitation of the Indus Valley Civilization. Evidence of the earliest surviving personal sized bath tub was found on the Isle of Crete where a 1.5-metre (5 ft) long pedestal tub was found built from hardened pottery.
Foot controlled valves are installed within laboratory and healthcare/hohspitals, as well as in industrial settings where extremely dirty hands operating taps might leave residues on them.
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