IWAKI MD magnetic drive chemical pump, sealless, GFRPP, up to 135 L/min

The IWAKI MD series is a world best-seller among compact chemical pumps. The impeller is driven by a pair of magnets and the liquid chamber is separated from the motor by a containment shell: there is no shaft seal, so typical seal leakage is eliminated.

Wetted parts are made of glass-fibre reinforced polypropylene (GFRPP). Suitable for a wide range of chemicals at liquid temperatures of 0–80 °C and specific gravity up to about 1.3 (model dependent). The series includes about 50 versions: standard, high-flow MD-X, high-head MD-Z and threaded MD-M. The wet end consists of few parts, which simplifies maintenance.

The duty point is selected from the Q-H curve, not from the maximum values. Series range at 50 Hz: flow 5.5–135 L/min, head 1–14.3 m, power 5–260 W (values for single-phase 100 V; for 220/380 V see the nameplate). Power supply options: 100 V 1ph, 200–240 V 1ph, 200/380/400/440 V 3ph.

Key features:

• Sealless magnetic drive — no shaft leakage and no mechanical seal to replace
• GFRPP wetted parts: broad chemical resistance
• About 50 models: standard, high-flow MD-X, high-head MD-Z, threaded MD-M
• Compact, for integration into equipment and water treatment lines

Series specifications:

• Max. flow 50/60 Hz: 5.5–135 / 6–135 L/min
• Max. head 50/60 Hz: 1–14.3 / 1.4–20.3 m
• Material: GFRPP
• Power: 5–260 W
• Liquid temperature: 0–80 °C
• Specific gravity: up to ~1.3
• Shaft seal: none (magnetic drive)
• Connection: model dependent, threaded MD-M available

Application: Electroplating and surface treatment, water treatment, chemical transfer and circulation, food lines with compatible liquids, OEM integration.

Scope of supply: Pump assembled with a motor of the selected voltage. Options: hose/union fittings for threaded MD-M (3 sizes, 2 materials), polypropylene self-priming tank.

Before ordering: Not for abrasive slurries or crystallising liquids. Dry running is not permitted for the standard MD. Check the liquid against the chemical resistance chart. 100 V (Japan) versions must not be connected to 220 V mains.