Pump body: cast iron, with UIN ISO 228/1 gas threaded suction and delivery openings. Motor bracket: cast iron, Impeller: brass, centrifugal radial flow. Motor shaft: AISI 314 stainless steel, Mechnical seal: ceramic and graphite, MOTOR: The pumps are coupled to an asynchronous, high efficiency TEK induction motor of suitable size, which is quiet, closed and externally ventilated, suitable for continuous duty. Insulation class B (Class F) The thermal cutout replay (motor protector ) is incorporated in all single phase motors. Three phase motors require an adequate external motor protector, with connections according to current standards. Protection: IP 44. Warranty: 1 Year