Iwaki MD Series Magnetic Drive Pumps

Iwaki MD is a family of compact, sealless centrifugal pumps with GFRPP wetted parts for chemical process lines. The pump is driven by a pair of magnets built into the impeller and the motor shaft; the pump chamber is shielded by the casings, so no conventional mechanical seal is needed and leakage is eliminated. According to the manufacturer, the MD series is used in medical equipment, analyzers, constant-temperature baths and surface treatment equipment for chemical feeding in more than thirty countries.

Three size groups, four types

The MD series has 50 models in three main size groups: MD-6·10 (5.5-11 L/min, 1.0-2.1 m head), MD-15·20·30·40 (10-75 L/min, 1.8-11.5 m) and MD-55·70·100 (40-135 L/min, 5.6-14.3 m). The standard type (R) is supplemented by the high-head type (Z), the high-flow type (X) and the threaded connection type (M). The right model is chosen from these types according to the required flow and head.

Size group	Max. discharge capacity	Max. discharge head	Motor
MD-6·10	5.5-11 L/min	1.0-2.1 m	Shaded pole motor
MD-15·20·30·40	10-75 L/min	1.8-11.5 m	Capacitor-run induction motor
MD-55·70·100	40-135 L/min	5.6-14.3 m	Capacitor-run induction motor

The MD-6, MD-6Z and MD-10 models use a fixed spindle design and do not have a threaded connection type; all other models are available with hose and threaded connections.

Construction and materials

The wetted parts are made of GFRPP. A ferrite magnet encapsulated in the impeller is driven through the rear casing by the drive magnet; on models with a rotating spindle, an alumina ceramic spindle is integrally molded with the impeller. O-rings are FKM or EPDM. The pump unit consists of a small number of integrated parts, so maintenance is simple. The whole series is designed for a liquid temperature of 0-80 °C, an ambient temperature of 0-40 °C and a viscosity of up to 30 mPa·s (at a specific gravity of 1.0). On MD-55, 70 and 100 models, IEC frame motors are available as an option.

Applications

The MD series is used for chemical feeding in medical equipment, analyzers, constant-temperature baths and surface treatment equipment. Its compact, sealless structure makes it well suited to built-in applications.

If you need a higher flow or a different wetted material, see the other Iwaki magnetic-drive process pumps; the Iwaki pump range gives an overview. Send us your requirement and Mikron Proses can help you choose the model.