Iwaki MMP Series Metallic Magnetic Drive Centrifugal Pumps

The Iwaki MMP series is a family of compact, metallic centrifugal magnetic drive pumps. The datasheet describes it as a small standard centrifugal pump for equipment use. The pump material is stainless steel 316, the magnet drive uses SiC-D bearings, and the seal-less design avoids leakage. Mikron Proses (Üsküdar, Istanbul) supplies Iwaki MMP pumps in Turkey and provides application consulting on pump selection and temperature versions.

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Technical data and model family

The series is available in three sizes: MMP11 (93 mm impeller diameter), MMP21 (122 mm) and MMP22 (84 mm). The motor type and output are set by the code F03 (0.37 kW, flange motor) or F05 (0.55 kW, IEC motor). The standard type reaches 20 m head at 50 Hz and 28 m at 60 Hz, with a maximum capacity of 80 L/min at both frequencies. The design pressure is 0.6 or 1 MPaG depending on the model. The operating temperature is -30 to +150 °C; the datasheet asks users to contact the supplier below -20 °C or above 120 °C. The maximum specific gravity is 2, the maximum viscosity is 100 mPa·s, and the impeller is closed.

High- and low-temperature versions

Two special temperature versions are available. The MMH (room temperature to +280 °C) has an open spacer between pump and motor that prevents excess heat transfer to the motor, and it uses SmCo magnets and a high-temperature gasket material. The MML (-80 to +150 °C) has a sealed spacer that protects the motor from excess cold, Nd magnets, a low-temperature gasket material and a nitrogen purge port that prevents moisture from freezing in the frame adapter.

Options and explosive atmospheres

An optional DRN series dry-running protector senses motor current to detect dry running and overload and has RS485 communication. Pumps supplied in accordance with the ATEX Directive (94/4/EC) are available for explosive atmospheres; the equipment marking is described in the instruction manual. The pumps are easy to disassemble and reassemble. Chemical compatibility depends on the liquid, concentration and temperature, so please check your duty with us before ordering.

For the other Iwaki process pump series, see the Iwaki magnetic-drive process pumps page.