Castel 1020/2 direct-acting normally-closed solenoid valve with 1/4" SAE flare connections. 230V AC, 50/60Hz. Maximum working pressure 45 bar. Operates at zero pressure differential. Compatible with R134a, R404A, R407C, R410A, R448A, R449A, R450A, R452A, R513A and other ASHRAE 34 Class A1 refrigerants. HF2 coil included.