Iwaki # MX-70VT-15L Mag-Drive Centrifugal Pump and motor, 1/4 HP

The Iwaki MX-70VT-15L is a Centrifugal Magnetic Drive Pump and Motor unit, 23.8 GPM rated, with GFRPP Glass Fiber Reinforced Polypropylene casing, GFRPP Impeller, CFRPPS Carbon fiber reinforced PPS bearing, Alumina ceramic Spindle, FKM O-ring, with 1 inch NPT inlet by 1 inch NPT outlet Ports, close coupled to a 1/4 Horsepower, 3450 RPM, 115 Volt AC, Single Phase, TEFC (Totally Enclosed Fan Cooled) Motor. This pump is a centrifugal magnetic drive pump, which eliminates the need for a shaft seal. It is driven by pair of magnets which are incorporated in the impeller and motor shaft. The seal-less pump structure eliminates shaft seals such as conventional mechanical seals because the pump chamber is shielded by the casings and the impeller is operated by the magnets. The combined coupling torque of the drive magnet and impeller magnet gives sufficient driving power against the motor torque. This seal-less centrifugal magnetic drive pump ideal for applications such as chemical re-circulation, chemical transfer, scrubber systems, and various production processes such as filtering, spraying, washing and etching in surface treatment process. This MX series pump is the first resin magnet pump that uses a split volute pump casing that forms a vortex chamber. The volute limits the liquid flow from the impeller and returns it to the pump, which is efficiently guided to the discharge port to enhance overall efficiency. The stress load bearing portions, such as the front and rear casings, are reinforced by means of ribs to improve the pressure resistance and the mechanical strength of the pump. The bearing is not only fixed by conventional press fit but is also sandwiched between the abutting portion in the depth of the magnet capsule and the rear end of the impeller to improve its reliability under high temperature. By installing the driving magnet and the driven magnet in an inventive way, the movement of the magnet capsule is controlled by magnetic force to prevent the rear thrust and the rear portion of the bearing coming into contact with each other continuously even during dry running. This structure reduces heat generation and secures lubricant routes. It has a patented self-radiating structure with heat dispersion holes provided in fixed portions of the impeller and the magnet capsule, the liquid around the spindle and the bearing is forced to circulate so that heat generated by friction can be reduced effectively, thereby preventing any thermal deformation and reducing wear. This pump is not self-priming, and lacks a suction lift, and requires a flooded suction - the liquid must flow naturally to the pump. It cannot be run dry because the impeller requires the liquid being pumped for lubrication. Do not operate the pump until liquid is inside of the pump and ever run the pump dry.