Valves and fittings for building technology from NieRuf
Building technology is a part of supply technology and helps ensure the supply of heat, air, water and sewage in buildings like residential buildings and industrial plants. The requirements for valves and fittings used in building technology are diverse and are defined by a wide range of actors such as architects, project planners, specialist planners and project engineers.
Water, drinking water, gas or district heat is supplied externally, thus a variety of barriers such as ball valves, butterfly valves and shut-off valves are needed to ensure safety. They help couple or decouple the building with the public water-, gas- or district heating network manually. This comes in handy when construction or restructuring is happening, or in case of damage. Since there are special requirements for gas- and drinking water supply by the DVGW, every valve, such as ball valves, butterfly valves and pressure reducers, that comes in contact with the medium, needs to be DVGW certified.
Regarding the disposal of e.g. sewage, one has to make sure that a backflow in the sewer is impossible. It does not matter whether the backflow happens in the public sewer, the sewer within the building or by flooding. Using a check valve allows the sewage to flow in only one directing, thereby preventing backflow.
Heating technology, depending on the size of the building and the heating method, also requires specific valves. Whilst infrared heating does not need pipelines, which in turn means no valves are needed, other heating systems such as gas heaters, solar thermal heaters, heat pumps and wood or pellet heating with boiler usually require several valves. Every heating system, in which excess pressure can occur, needs to contain a safety valve. In heating technology with a pump system, overflow valves are required in order to protect the pump from excess pressure. Furthermore, isolating equipment, such as ball valves, shut-off valves and butterfly valves, needs to be installed to ensure manual emergency shut down.