If you are a failure, you should immediately call the appropriate service hydraulic, and at the same time it is necessary to remember that he was a proven and reliable.
That is why plumbers are trying to choose such piping and branching to the network created by himself, to then easily it could be extended with new connections.
As a result, the household will be able to connect new devices themselves, such as a washing machine or dishwasher, and only in the case of more complex devices ask for help from a plumber.By the way, he will be able to review the status of water supply, sewerage and clean it using modern methods and means.
A union is similar to a coupling, except it is designed to allow quick and convenient disconnection of pipes for maintenance or fixture replacement.
Since the mating ends of the union are interchangeable, changing of a valve or other device can be achieved with a minimum loss of time.
Pipe unions are essentially a type of flange connector, as discussed further below. In addition to standard, simple unions, other types of union exist: Dielectric unions are unions with dielectric insulation, used to separate dissimilar metals (such as copper and galvanized steel) to avoid the damaging effects of galvanic corrosion.When two dissimilar metals are in contact with an electrically conductive solution (even tap water is conductive), they will form a battery and generate a voltage by electrolysis.
When the two metals are in direct contact with each other, the electric current from one metal to the other will cause a movement of ions from one to the other, dissolving one metal and depositing it on the other.A dielectric union breaks the electric current path with a plastic liner between two halves of the union, thus limiting galvanic corrosion. Rotary unions are unions that allow for rotation of one of the united parts.Źródło: https://en.wikipedia.org/wiki/Piping_and_plumbing_fitting.