SIEMENS QVE1901 flow switch that can be used in hydraulic systems, PN25, DN20 … 200. In hydraulic systems, in particular, refrigeration, heat pump, and heating systems (e.g. for evaporators, boilers, heat exchangers, etc.) is regulated by the Québec QVE1901 sensor

Applications: condensers, boilers, heat exchangers, heat pump and heating installations.