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Static pressure
The static pressure of a system is the pressure that is not provided by the circulator pump.
Stationary part of shaft seal
The stationary part of the seal is fixed in the pump housing.
Steam
Steam is used for the distribution of district heating for building heating systems and industrial heating processes.
Stop function
The stop function makes it possible to stop the last booster pump in operation, if there is no or very small consumption.
Stormwater
Stormwater describes water that originates during precipitation events.
Strainer
Strainers are integrated into heating and cooling systems to filter impurities from the circulating medium.
Stress corrosion cracking
Metallic corrosion involves the loss of metal at a spot on an exposed surface - ranging from uniform attacks over the entire surface to severe local attacks.
Stribeck curve
The Stribeck curve is an overall view of friction variation in the entire range of lubrication, including the hydrodynamic, mixed, and boundary lubrication.
Subcooling
Subcooling is a technical expression for a refrigerant in liquid phase at a temperature lower than the corresponding evaporating temperature to the actual pressure.
Submerged installation
The two most common installation types are free standing pump installation and pump installation on an auto coupling.