FSD-W series of differential pressure switch is used for flow control with flow control accuracy of HVAC, system is no longer an additional resistance to water, and no requirement to pipe diameter and flow turbulence interference characteristics, can replace any form of target type flow switch as the HVAC water system flow control, relative to the target type flow switch it can prevent the pump cavitation flow caused by false.

FSD-W series differential pressure switches are widely used in the use of plate heat exchanger, tube heat water flow control and condition monitoring of water pump and water filters. Import and export of the differential protection, to ensure that the heat exchanger to prevent dirty, plugging.