STRUCTURAL CHARACTERISTICS DELIVERY BODY : cast iron, with UNI ISO 228/1 gas threaded vertical delivery opening. BASE: cast iron. IMPELLER: cast iron. MOTOR SHAFT: AISI 314 stainless steel. DOUBLE MECHANICAL SEAL: carbon/alumina, MOTOR: designed for continuous duty. The thermal cutout relay (motor protector) is incorporated. INSULATION class B. PROTECTION: IP 68. SUPPLY CABLE: supplied standard with 5 metres of cable and plug. EXTERNAL FLOAT switch: standard equipment.