The QVE1901 is a flow switch from Siemens that controls the flow in hydraulic systems. It can be used in heating systems, cooling devices, and heat pumps.
The QVE1901 works by monitoring the flow of fluid through a pipe, which causes the switch's vane system to move. At the end of the vane system is a permanent magnet that moves toward the reed relay as the system moves.
The QVE1901 is suitable for liquid mediums in HVAC plants, such as refrigeration, heat pumps, and heating plants. It can be used in systems using liquids or gases and has a maximum switching capacity of AC 26 VA, and DC 20 W.
SIEMENS FLOW SWITCH QVE1901
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