RADIATOR THROTTLE VALVES For Oil Filled Transformers Pad Lockable, Forged Steel Body Size : 80mm Bolt On Type, Pad Lockable, Forged Steel Body Size : 80mm Bolt On Type, Economy Model with Cast Iron Body Size : 80mm Welding Neck Type, Pad Lockable, Forged Steel Body Size : 80mm Zero Leakage, Bolt On Type with Aluminum Body, Size : 80mm Zero Leakage, Welding Neck Type, Steel Body Size : 125mm (5 inch) Zero Leakage, Flange Type, Steel Body Size : 125mm (5 inch) Zero Leakage, Bolt On Type, Pad Lockable, Forged Steel Body Size : 80mm