Introduction
The Iwaki G series chemical pump is the first internal gear pump designed for chemical process applications using fine ceramic gears made of SiC and Silicon nitride. This innovation enhances abrasion resistance, chemical resistance, and low-viscosity characteristics without compromising the advantages of conventional internal gear pumps.

Specifications and Models
The G series includes two main models: the GX type with gland packing/mechanical seal and the GM type, a magnetic drive sealless pump. These models cater to a wide range of industrial processes, handling both high and low viscosity liquids effectively.

Performance and Features
1. Handling of Low-Viscosity Liquids: SiC ceramic gears prevent jamming and seizing even at high speeds.
2. Handling of High-Viscosity Liquids: Silicon nitride ceramic gears provide stable performance due to their strength and toughness.
3. Slurry Handling: Ceramic components allow for the handling of fine slurries without impairing pump longevity.
4. Magnetic Drive: The GM model uses superior anticorrosive materials, ideal for handling chemical liquids requiring strict leakage and air contact control.

Improved Performance Characteristics
Ceramic gears reduce spaces between parts, outperforming conventional metal gear models. The pump offers quiet liquid transfer with less pulsation and high self-priming ability due to the top suction port design.

Construction and Operating Principle
The pump consists of a pinion (drive gear) and an internal gear (driven gear) supported by bearings. Liquid is transferred by changes in the capacity of the meshed portion of the gears. The suction process involves gear disengagement and space expansion, while the discharge process involves gear meshing and space reduction to force out the liquid.

Applications
The G series pumps are suitable for various applications, including non-pulsating constant flow injection in copper foil manufacturing, constant flow spraying in waste liquid burning equipment, and constant flow transfer of magnetic slurry, paint, dye slurry, and other chemical processes.