... valveDN15-DN25, 220V,110V,24V power supply, ,NPT/BSPP connection5, Electro thermal heating valveDN15-20, Reliable performance, durable, energy-saving,IP40,220V,110V power supply, 6 ... , Damper actuator2Nm~30Nm, 220V,24V power supply, On/Off,0~10V or 4 ...