... for one of the best customized motorized on/off or modulating ball valve-htw-71-18b6f series manufacturers ... ). With power supply optional:AC24±10%, 50/60Hz or AC220±10%, 50/60Hz, whose control signal can ... be customized as ON/OFF, 0(2)~10VDC or 4~20mA, with or without non-voltage feedback ... thread;¤Medium: cold or hot water or 60% glycol;¤Control Signal: On/Off or 0(2)~10VDC or 4~20mA;¤Voltage Supply ...