SF6 GAS TRANSFER UNIT – GTU 220V, 50HZ; GTU-220V-CE obsolete, replaced by SF6 GAS TRANSFER UNIT – GTU 220V EF-718-1/2A EF-718-1A EF-718-5A EF-718-10A EF-718-20A EF-718-30A EF-718-0B EF-718-0C E-13331 E-12984 EG-316-5H12X E-14810. EP-718-1/2A2 EP-718-5A2