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There is a large variety of metering pumps designed for different industrial applications. Metering pumps that provide a high degree of accuracy are perfect for chemical processing and water treatment.

In this blog post, we shed light on some of the most commonly used metering pumps and how they differ from each other.

Piston Pumps

These metering pumps work similarly to two-cycle engines. Due to the strong assembly, these pumps can deal with the highest pressure and in conditions where accuracy is a must.

Piston pumps utilize a reciprocating plunger to transfer liquids through the unit. These metering pumps are typically used in water processing applications and chemical handling plants.

Peristaltic Pumps

These pumps use specialized tubing that is squeezed in the direction of the product flow. They include rollers that squeeze the tube to push the liquid ahead. The tubing comes back in its original form after being squeezed, creating a vacuum. As the tubing is the only part of this pump that comes into direct contact with the liquid, they are easy to clean and have exceptional sterile capabilities. At the same time, the constant stress on the tubing means it might need to be changed more often.

Gear Pumps

Gear pumps utilize a cavity that rotates. They move many smaller cavities per minute. Therefore, they don’t pulse as often as other metering pumps. The primary consideration with gear pumps are that increasing the pressure might end up decreasing the flow rate. These pumps work best in conditions where there is stable back-pressure.

In addition to this, as the fluid flows between the teeth of gears, these pumps are best suited for applications where particle contamination is not a concern.

The Applications

The most common industrial applications for metering pumps include chemical processing, laboratory dispensing and water treatment.

  • Chemical processing – Metering pumps may be used in chemical processing where the application requires real-time releasing into the reaction vessels. Similarly, they might also be used to dispense end products.
  • Water treatment – Metering pumps may be used to feed chemical additives into water. The type of the additives being used help determine which category of metering pumps to should be chosen.
  • Laboratory dispensing – Researchers who are constantly working in labs require accurate delivery of products. From dye injections for spectroscopy to dispensing hot agar, metering pumps are used here for a variety of applications.

These are some of the most common types of metering pumps and their applications across different industries. Check out our collection of metering pumps today.

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