In preparation for the profession plumber was allergic to it, that should keep safety in accordance with applicable safety regulations, especially if it has been delegated to carry out more dangerous actions hydraulics.
Its tasks will include the security room, where he works, before pouring the water from the device that is failing.Remuneration for work hydraulics is dependent on what was the scope of its activities and how many hours were spent on the performance of their tasks.
Water systems of ancient times relied on gravity for the supply of water, using pipes or channels usually made of clay, lead, bamboo, wood, or stone.
Hollowed wooden logs wrapped in steel banding were used for plumbing pipes, particularly water mains.Logs were used for water distribution in England close to 500 years ago. US cities began using hollowed logs in the late 1700s through the 1800s.8 Today, most plumbing supply pipe is made out of steel, copper, and plastic; most waste (also known as "soil")11 out of steel, copper, plastic, and cast iron.11 The straight sections of plumbing systems are called "pipes" or "tubes".
A pipe is typically formed via casting or welding, whereas a tube is made through extrusion.Pipe normally has thicker walls and may be threaded or welded, while tubing is thinner-walled and requires special joining techniques such as brazing, compression fitting, crimping, or for plastics, solvent welding.
Steel pipe has National Pipe Thread (NPT) standard tapered male threads, which connect with female tapered threads on elbows, tees, couplers, valves, and other fittings.Galvanized steel (often known simply as "galv" or "iron" in the plumbing trade) is relatively expensive, and difficult to work with due to weight and requirement of a pipe threader.
It remains in common use for repair of existing "galv" systems and to satisfy building code non-combustibility requirements typically found in hotels, apartment buildings and other commercial applications.It is also extremely durable and resistant to mechanical abuse.
Black lacquered steel pipe is the most widely used pipe material for fire sprinklers and natural gas. Most typical single family home systems won't require supply piping larger than 3?4 inch (19 mm) due to expense as well as steel piping's tendency to become obstructed from internal rusting and mineral deposits forming on the inside of the pipe over time once the internal galvanizing zinc coating has degraded.In potable water distribution service, galvanized steel pipe has a service life of about 30 to 50 years, although it is not uncommon for it to be less in geographic areas with corrosive water contaminants. Copperedit Main article: Copper tubing Copper pipe and tubing was widely used for domestic water systems in the latter half of the twentieth century. In the early twenty-first century, the rising price of copper drove a shift to plastic pipes for new construction. Plasticedit Main article: Plastic pipe Plastic hot and cold supply piping for a sink Plastic pipe is in wide use for domestic water supply and drain-waste-vent (DWV) pipe. Principal types include: Polyvinyl chloride (PVC) was produced experimentally in the 19th century but did not become practical to manufacture until 1926, when Waldo Semon of BF Goodrich Co.
developed a method to plasticize PVC, making it easier to process.PVC pipe began to be manufactured in the 1940s and was in wide use for Drain-Waste-Vent piping during the reconstruction of Germany and Japan following WWII.
The method for producing cross-linked polyethylene (PEX) was also developed in the 1950s.
Connections are made with primers and solvent cements as required by code.12 PP ? The material is used primarily in housewares, food packaging, and clinical equipment,13 but since the early 1970s has seen increasing use worldwide for both domestic hot and cold water.
PP pipes are heat fused, being unsuitable for the use of glues, solvents, or mechanical fittings.
PP pipe is often used in green building projects.1415 PBT ? flexible (usually gray or black) plastic pipe which is attached to barbed fittings and secured in place with a copper crimp ring.
In 2005, a large number of these fittings were recalled.further explanation needed Present-day water-supply systems use a network of high-pressure pumps, and pipes in buildings are now made of copper,16 brass, plastic (particularly cross-linked polyethylene called PEX, which is estimated to be used in 60% of single-family homes17), or other nontoxic material.
A plumber is a tradesperson who specializes in installing and maintaining systems used for potable (drinking) water, sewage and drainage in plumbing systems.
The word "plumber" dates from the Roman Empire.3 The Latin for lead is plumbum.