PWDS600 HVAC pressure switch with excellent stability

The application of PWDS600 HVAC pressure switch (also known as differential pressure flow switch) in HVAC system is mainly controlled according to the resistance and flow curve of HVAC equipment. The heat exchanger (casing type, shell and tube type, tube plate type and common plate type heat exchanger), water filter, water pump, valve and other equipment of HVAC equipment have their pressure drop (resistance) and flow performance curve, As long as the water pressure difference between the two ends of the heat exchanger is detected and compared with the preset value of the equipment, the flow can be accurately controlled. As a flow control switch, the differential pressure switch (also called differential flow switch) has the advantages of accurate flow control, no additional resistance to the system, no requirement for the pipe diameter and no disturbance of water flow, Therefore, it can be widely used in large, medium and small air-cooled or water-cooled chillers with welded plate heat exchanger, sleeve heat exchanger and shell and tube heat exchanger, and has the functions of water flow detection and control and antifreeze protection.