spdt hvac water flow switch
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stainless steel paddle chiller flow switch HVAC
KCL Series Differential Pressure Switch with SPDT Contact Configuration, IP65 Protection Rating, and 20bar Maximum Work Pressure
QYD Series Differential Pressure Switch with 0.5bar~6bar Range IP44 Protection and -20~120℃ Temperature
QYD(W) Waterproof Differential Pressure Switch with IP65 Protection 0.5~6 Bar Range and 125VDC/250VDC Supply Voltage