Multum Użytecznych eInformacji

Plumbers today


plumber Merton

The methods of the work of complaint

From time to time the company Hydraulic must account for work performed by them, for example, the Tax Office. A separate statement is prepared by the person responsible for fixing the amount of payments received by the plumbers employed by the company hydraulic system. In most companies separate bonuses are also provided for overtime performed late in the evening or even at night and on weekends. Unfortunately, if one of the employees has seen some complaints reported by customers, then can such a situation a negative impact on its earnings. The deadline complaint can be carried out in the presence of a trusted former employee of the company, who will check on how his younger colleague performs the tasks entrusted to it.


Boilers and safety

To define and secure boilers safely, some professional specialized organizations such as the American Society of Mechanical Engineers (ASME) develop standards and regulation codes. For instance, the ASME Boiler and Pressure Vessel Code is a standard providing a wide range of rules and directives to ensure compliance of the boilers and other pressure vessels with safety, security and design standards.


A boiler that has a loss of feed water and is permitted to boil dry can be extremely dangerous. If feed water is then sent into the empty boiler, the small cascade of incoming water instantly boils on contact with the superheated metal shell and leads to a violent explosion that cannot be controlled even by safety steam valves. Draining of the boiler can also happen if a leak occurs in the steam supply lines that is larger than the make-up water supply could replace. The Hartford Loop was invented in 1919 by the Hartford Steam Boiler and Insurance Company as a method to help prevent this condition from occurring, and thereby reduce their insurance claims

Źródło: https://en.wikipedia.org/wiki/Boiler#Safety


Basic facts about pipes and tubes

The difference between pipes and tubes is simply in the way it is sized. PVC pipe for plumbing applications and galvanized steel pipe for instance, are measured in IPS (iron pipe size). Copper tube, CPVC, PeX and other tubing is measured nominally, which is basically an average diameter. These sizing schemes allow for universal adaptation of transitional fittings. For instance, 1/2" PeX tubing is the same size as 1/2" copper tubing. 1/2" PVC on the other hand is not the same size as 1/2" tubing, and therefore requires either a threaded male or female adapter to connect them. When used in agricultural irrigation, the singular form "pipe" is often used as a plural.7

Pipe is available in rigid "joints", which come in various lengths depending on the material. Tubing, in particular copper, comes in rigid hard tempered "joints" or soft tempered (annealed) rolls. PeX and CPVC tubing also comes in rigid "joints" or flexible rolls. The temper of the copper, that is whether it is a rigid "joint" or flexible roll, does not affect the sizing.7

The thicknesses of the water pipe and tube walls can vary. Pipe wall thickness is denoted by various schedules or for large bore polyethylene pipe in the UK by the Standard Dimension Ratio (SDR), defined as the ratio of the pipe diameter to its wall thickness. Pipe wall thickness increases with schedule, and is available in schedules 20, 40, 80, and higher in special cases. The schedule is largely determined by the operating pressure of the system, with higher pressures commanding greater thickness. Copper tubing is available in four wall thicknesses: type DWV (thinnest wall; only allowed as drain pipe per UPC), type 'M' (thin; typically only allowed as drain pipe by IPC code), type 'L' (thicker, standard duty for water lines and water service), and type 'K' (thickest, typically used underground between the main and the meter). Because piping and tubing are commodities, having a greater wall thickness implies higher initial cost. Thicker walled pipe generally implies greater durability and higher pressure tolerances.

Wall thickness does not affect pipe or tubing size.8 1/2" L copper has the same outer diameter as 1/2" K or M copper. The same applies to pipe schedules. As a result, a slight increase in pressure losses is realized due to a decrease in flowpath as wall thickness is increased. In other words, 1 foot of 1/2" L copper has slightly less volume than 1 foot of 1/2 M copper.citation needed

Demand for copper products has fallen due to the dramatic increase in the price of copper, resulting in increased demand for alternative products including PEX and stainless steel.


Źródło: https://en.wikipedia.org/wiki/Water_pipe#Difference_between_pipes_and_tubes


Zobacz inne ciekawe wpisy na naszej stronie:


Artykuł o emigracji, Polakach za granicą i przewozach osób

tanie przewozy podkarpacieAutokar kontra autobusAutokar (autobus turystyczny, autobus dalekobieżny) ? autobus przystosowany do przewozów pasażerskich na duże odległości, na trasach międzymiastowych i międzynarodowych. Według definicji Europejskiej Komisji Gospodarczej, Eurostatu i Międzynarodowego Forum Transportu jest to pasażerski mechaniczny pojazd drogowy przeznaczony do przewozu więcej niż 24 osób (wliczając kierowcę) i posiadający wyłącznie miejsca siedząceŹródło: ht...

Artykuł o wirtualnym biurze

biuro wirtualne w warszawieDla kogo wirtualne biuro to doskonała propozycja? Z roku na rok istnieje coraz większe zapotrzebowanie na usługi takie, jak wirtualne biuro. Dzięki tego typu usługom możemy pozbyć się uciążliwych zadań takich, jak obsługa korespondencji i tym podobne. Wirtualne biuro to bardzo dobra opcja na start, dla przedsiębiorców dopiero wchodzących na rynek w swojej branży. Taka działalność pozwala bowiem na oszczędzenie znacznych środków, które następnie ...

Czysty dywan

pranie kanap wrocławSprzątaj regularnieNie da się ukryć tego, że bez regularnego sprzątania do naszego domu wkradnie się tak przecież niepożądany chaos, a my możemy zyskać opinię osoby, która nie panuje nad swoimi wnętrzami. Z tego powodu zwyczajnie wypada zadbać o czystość i pamiętać o tym, że przynajmniej raz w tygodniu dobrze byłoby zająć się naszymi pokojami.Możemy też zatrudnić do tego kogoś z zewnątrz, jeżeli nie dysponujemy odpowiednią do tego celu ilości...

Energia odnawialna, kolektory słoneczne - zastosowanie i porady

inwerter abb Montaż instalacji słonecznych Instalacje słoneczne zazwyczaj montują specjalne firmy, mające odpowiednie doświadczenie w tej branży. Chociaż podobno da się zbudować samodzielnie panel słoneczny, to jednak tylko wtedy, gdy korzystamy z pomocy profesjonalistów możemy być pewni, że taka instalacja działa w sposób sprawny i bezpieczny. Fotowoltaika i kolektory słoneczne to niewątpliwie energia przyszłości i trzeba przyznać, że w tej branży istnieje spore pole do...