STRUCTURAL CHARACTERISTICS PUMP BODY: Brass, with UIN ISO 228/1 gas threaded suction and delivery openings. MOTOR BRACKET: aluminium with front brass insert; reducing difficulties when starting the pump after long periods without use,due to the impeller blocking. IMPELLER: brass. MOTOR SHAFT: AISI 314 stainless steel. MECHANICAL 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. 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. INSULATION: class B (Class F) PROTECTION: IP 44.