Piston-operated 2/2 way solenoid valve for very high pressures. A minimum pressure (1 bar) between inlet and outlet is required for operation. Standard operation Norm.Closed. Norm version available. Restricted. Material Acc. Inox. Maximum pressures up to 450 bar. Passages DN12, 25, 40, 50 mm. Threaded connections 1/4 " 3/8" 1/2 " 3/4" 1 " 1"1/4 2 "