Iwaki G Series Ceramic Gear Pump

The Iwaki G series is a corrosion-resistant internal gear pump with fine ceramic gears. Discharge is proportional to the pump speed, so the flow rate can be controlled precisely by changing the speed (for example with an inverter), and the pump runs without the pulsation of reciprocating pumps. It is self-priming and is built from SUS316, SiC and PTFE. Mikron Proses (Üsküdar, Istanbul) supplies Iwaki pumps in Turkey and provides application consulting on pump selection.

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For the wider range of Iwaki dosing pumps, see Iwaki chemical metering pumps.

GX and GM types

The G series comes in two types. The GX is a conventional gear pump housing sealed with gland packing or a mechanical seal. The GM is a magnetic drive, sealless type: the liquid does not contact any metallic part and leakage risk is removed. Both types use fine ceramic gears (SiC/SiC for low-viscosity liquids, Si3N4/SiC for high-viscosity liquids), which resist abrasion, galling and seizing. The GX type can handle fine slurries; in principle only slurries with particles of less than 10 µm can be handled, and the speed must be reduced. The GM type is not suitable for slurry applications. The GX type works over a wide temperature range (0-150 °C), while the magnetic drive GM type is limited to 0-80 °C (0-50 °C for liquids of 200 mPa·s or more).

Applications

The G series is used for glue dosing in copper foil manufacturing, transfer of magnetic and paint or pigment slurries, injection of coagulant and paper strength enhancer, ammonia or urea water spraying in flue gas treatment plants, transfer of cleaning solvent for metal and electronic parts, and transfer of aggressive chemicals such as caustic soda, 98 % sulfuric acid and nitric acid.