Valves - where do we use them?

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Valves are found in virtually every industrial process, including water and sewage processing, mining, power generation, processing of oil, gas and petroleum, food manufacturing, chemical and plastic manufacturing and many other fields. People in developed nations use valves in their daily lives, including plumbing valves, such as taps for tap water, gas control valves on cookers, small valves fitted to washing machines and dishwashers, safety devices fitted to hot water systems, and poppet valves in car engines. In nature there are valves, for example one-way valves in veins controlling the blood circulation, and heart valves controlling the flow of blood in the chambers of the heart and maintaining the correct pumping action. Valves may be operated manually, either by a handle, lever, pedal or wheel.
Valves may also be automatic, driven by changes in pressure, temperature, or flow.
These changes may act upon a diaphragm or a piston which in turn activates the valve, examples of this type of valve found commonly are safety valves fitted to hot water systems or boilers. More complex control systems using valves requiring automatic control based on an external input (i.e., regulating flow through a pipe to a changing set point) require an actuator.Źródło: https://en.wikipedia.org/wiki/Valve

Worth to know - history of plumber profession

A plumber is a tradesperson who specializes in installing and maintaining systems used for potable (drinking) water, sewage and drainage in plumbing systems.

The term dates from ancient times, and is related to the Latin word for lead, "plumbum".

The word "plumber" dates from the Roman Empire.3 The Latin for lead is plumbum.

Roman roofs used lead in conduits and drain pipes4 and some were also covered with lead, lead was also used for piping and for making baths.5 In medieval times anyone who worked with lead was referred to as a plumber as can be seen from an extract of workmen fixing a roof in Westminster Palace and were referred to as plumbers "To Gilbert de Westminster, plumber, working about the roof of the pantry of the little hall, covering it with lead, and about various defects in the roof of the little hall".6 Thus a person with expertise in working with lead was first known as a Plumbarius which was later shortened to plumber.

Źródło: https://en.wikipedia.org/wiki/Plumber

Connecting the bathtub in the bathroom

The bathroom is the room in which you can use the shower and do daily personal hygiene.
All this makes the private bathroom includes a variety of sanitation, which must be properly installed so that they can function efficiently.

Therefore, plumbers often involved in connecting the bathroom faucet and shower or bath.

Sometimes the bathroom taps are placed on the photocell which makes the plumber must be performed at the time of their work to use various equipments.
The sales are also various types of baths, which the installation may be more or less problematic. While carrying out efficient assembly of the shower may require the presence of two employees of the hydraulic system..

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