A sink?also known by other names including sinker, washbowl, hand basin and wash basin?is a bowl-shaped plumbing fixture used for washing hands, dishwashing, and other purposes.
Sinks have taps (faucets) that supply hot and cold water and may include a spray feature to be used for faster rinsing.
They also include a drain to remove used water; this drain may itself include a strainer and/or shut-off device and an overflow-prevention device.Sinks may also have an integrated soap dispenser. When a sink becomes stopped-up or clogged, a person will often resort to use a chemical drain cleaner or a plunger, though most professional plumbers will remove the clog with a drain auger (often called a "plumber's snake").Źródło: https://en.wikipedia.org/wiki/Sink
The need for its implementation may be due to a failure by which the bathroom was flooded, or simply the desire to renew the bathroom and fitted on the new devices.
In the course of such repair can be removed spa bathrooms and install in its place a shower.If the bath was in the bathroom for many years, it may be that the installation of the shower will need replacing water drainage pipes and installing in their place new ones that ensure good water flow from the shower.
You will also be able to move to another location sink in the bathroom, and hence, installed in an existing network plumbing new connections..