Features of GX series

High Levels of Durability

Fine ceramic gears provide superior abrasion resistance and chemical resistance than conventional gear pumps, prevent “galling” and “seizing” when the pump operates at a high speed. Main materials are stainless which provides corrosion resistance and thermal resistance. Superior anticorrosive materials such as stainless, ceramic, PTFE and carbon are used in liquid ends so that all sorts of chemical liquids can be handled.

Quiet Liquid Transfer with Less Pulsation

Without the pulsation that is common to the reciprocating pump and the gear pump for general uses, liquid is transferred quietly and smoothly , not agitating or generating foam/bubbles.

Wide Range of Viscosity Liquids and Fine Slurries Can Be Handled

The fine ceramics are available in two types. SiC (silicon carbide) ceramics, which is ideal for handling low viscosity liquids, and Si3N4 (silicon nitride) ceramics, which is ideal for handling high viscosity liquids. The GX type can handle hard and soft fine slurries.

Improved Performance

Performance has been noticeably improved. Ceramic gears make it possible to reduce spaces between parts, therefore outperforming conventional metal gear models. The pump is far less subject to declining output even under high pressure.

High Self-Priming Ability

Because the suction port is at the top of the pump, the pump chamber is filled with liquid when pump stops. The self-priming capacity is enhanced at re-start.

• The height of self-priming varies depending on the liquid characteristics, liquid temperature, piping conditions. Please contact us for details.

Simple Device Configuration Easy Maintenance

By simply combining a PFC controller, magnetic flowmeter, inverter, and back pressure valve, it is possible to inject a constant flow with less pulsation even if there are fluctuations in the level of the suction tank or load fluctuations on the discharge side.

Constant Flow Injection with Excellent Controllability

Regardless of the temperature change, viscous liquid can be handled at accurate flow rate, which cannot do with other pumps. As the output is linearly related to rpm, the flow rate is easily controlled by changing motor speed. The pump achieves fixed injection with the rangeability 10 times greater than conventional metering pumps.

• Rangeability 1:100
• To perform constant flow Injection, use this pump with a PFC controller, magnetic flowmeter, inverter and back pressure valve.

Cost Reduction

Fine ceramics have excellent abrasion resistance so there is almost no wear on the parts and they can be used for a long period. In addition, the pump performs pulsation-free operation without pulsation suppression accessories such as air chambers. Compared to reciprocating pumps, fewer components reduce initial and total costs.

We Offer a Wide Range of Customized Unit

We provide comprehensive support for our products according to your needs, from designing and manufacturing piping units and control panels to inspection, shipping, and on-site adjustment.

Operating principle

  1. A pinion (drive gear) coupled with a shaft supported by two bearings meshes with an internal gear (driven gear) whose periphery is supported by a strong bearing.
  2. Liquid is transfered by a change in the capacity of this meshed portion. In the suction process, the gears are disengaged and a space defined by the two gears and the casing expands. The liquid is drawn into the space by the negative pressure generated.
  3. In the discharge process, their teeth begin to mesh and space defined by the two gears and the casing is reduced to force out the liquid.

The discharge port is on the right side when viewed from the front of the pump, also available selected the left side as a special order.

Examples of applications

  • Non pulsatile quantitative injection of animal glue in copper foil manufacturing process.
  • Quantitative transfer of magnetic slurry liquid.
  • Quantitative transfer of paint and dye slurry liquid.
  • Quantitative injection of coagulant.
  • Quantitative injection of paper strength enhancer.
  • Non pulsatile quantitative transfer of fine slurry of electronic materials.
  • Ammonia water/urea water spray in flue gas denitration equipment such as cleaning factory.
  • Transfer of perfume such as detergent.
  • Transfer of cleaning solvent for metal parts, electronic parts etc.
  • Solvent-based adhesive transfer.
  • Chemical liquid transfer for various processes. (caustic soda, 98% sulfuric acid, nitric acid etc.)
  • Coating of positive and negative electrode materials for rechargeable lithium-Ion battery manufacturing.

Specifications (50/60Hz)

Max. discharge capacity 35.2 / 42.5 L/min
Max. discharge pressure*1 1.0 MPa
Max. speed 1800 min-1
Main materials SUS316, SiC, Si3N4
Motor output range 0.2 – 3.7 kW
Liquid temperature range 0 – 150℃
Viscosity range*2 0.5 – 10000 mPa·s*3
Slurry liquid Please cntact us for details.
Sealing method Gland packing or mechanical seal

*1 The max. value depends on the motor speed and liquid viscosity. Please contact us for details.
*2 Please contact us for the motor speed and motor output suited to the viscosity of your liquid.
*3 The max. viscosity when using a mechanical seal in GX type is 1000 mPa·s. In addition, allowable viscosity and rotational speed vary depending on the liquid temperature range.

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