1 2" 2 Way Globe Valve, Water Up To 50% Glycol, CV 0.4, 24 VAC VDC, Proportional [0 to 10 VDC], Non Spring Return, Nor Marca_Setra DUCT VOC 3W 0 10V 20K Rango de Presion:0 a 1" w.c. DUCT VOC 3W 0 10V 20K NPT 2 Way 145 CV Stainless Steel Trim DCA Profile On Off(Fail Closed) 24 Vac 75 sec Runtime Water Up To 50% Glycol