The Challenge

A leading multi-national electronics company with numerous plants across South Korea has for many years been using Metering pumps for dosing Aluminium Sulphate in their wastewater treatment facilities.

The plant engineers approached the local Verderflex distributor Dong-Il Ent Co Ltd, looking for a solution to the following problems:

  • Inconsistent dosing of Aluminium Sulphate when tank levels were low
  • Unscheduled maintenance periods
  • High maintenance costs

Verderflex Solution

After consultation with the customer and site visits, 8 x Rapide R2S Peristaltic tube pumps were selected to replace the existing Metering pumps. The pumps currently operate at flow rates ranging from 78ml/min to 1080 ml/min with discharge pressures up to 1.5 bar.


The end user now experiences predictable maintenance patterns, whereby the service period has been increased from 600 hrs to 1000 hrs. This has reduced the process downtime that was experienced before with the metering pumps and has brought a significant reduction in the maintenance costs.

Jason Bang, Dong-Il Ent Co Ltd, Sales Manager “the customer is very happy with the simplistic operation & maintenance of the pumps. The ease in which the tube can be changed using the ski-boot clamp of the Rapide R2S, compared to the labour heavy and complicated maintenance of the Metering pumps is just one of the many reasons the end user decided to go for Verderflex Rapide pumps”.