Qdos Pumps Replace Diaphragm Pumps In Paint Shop Chemical Metering Application
Fluids Handling

Qdos Pumps Replace Diaphragm Pumps In Paint Shop Chemical Metering Application

Photo of Watson Marlow Watson Marlow Send an email 06/08/2019
210 2 minutes read
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Five Qdos 30 chemical metering pumps from Watson-Marlow Fluid Technology Group (WMFTG) are being deployed in a critical paint shop application at Bredel – also part of WMFTG – and a world leader in the design and manufacture of hose pumps.

Delivered by surface finish technology specialist Indufinish as part of a system for treating non-ferrous metals prior to painting, the Qdos 30 units replaced diaphragm pumps in the original specification to help improve process management and bath quality.

It was in 2018 that Indufinish first contacted Watson-Marlow Fluid Technology Group in the Netherlands with a request for five Qdos pumps to replace diaphragm pumps in a chemical metering application at the Delden plant of Bredel.

Now installed, the Qdos pumps are being used for pH-control; for metering proprietary Chemetall chemicals such as Gardoclean (cleaner/degreaser), Gardobond (phosphate conversion coating) and Oxsilan (silane-based pre-treatment); and for introducing additives like zirconium and fluoride.

The surface-treatment installation consumes chemicals, which are replenished by the Qdos pumps. Here, the run time and flow rate of the pumps depends on the paint shop’s workload. However, the manually controlled Qdos units typically operate for 2-5 hours a day, at flow rates of 1 to 15 l/h.

Bertus Groteboer, senior manufacturing engineer at the Bredel plant, says:

“Inherent ease of use means we can easily program the flow rate, which in combination with checking the fluid level of the jerry cans, brings about a major improvement in process management. In turn, the quality of the process baths has increased and is more consistent.”

Paint shop chemical metering application

The set flow rate of Qdos pumps remains constant up to the maximum 7 bar operating pressure, giving them a unique advantage over diaphragm metering pumps.

In addition, Qdos pumps offer long maintenance intervals, reducing the impact of process downtime and lowering TCO (total cost of ownership). In fact, TCO is typically half that of diaphragm pumps in chemical metering applications.

A further issue with diaphragm metering pumps is their frequent requirement for a range of high-maintenance ancillary items in order to function effectively.

There is no such need with Qdos pumps, which deliver accurate, linear and repeatable metering across all process conditions without backpressure valves, pulsation dampeners, degassing valves, foot valves, strainers or float switches.

The ReNu peristaltic pumphead is at the core of Qdos pumps, ensuring the delivery of accurate and repeatable flow for fluids with wide-ranging viscosities.

Process uptime is maximised by facilitating quick, safe and easy pumphead removal and replacement, without any requirement for tools, specialist training or skilled maintenance technicians. The contained pumphead design with integral leak detection reduces wastage and eliminates operator exposure to chemicals.

Danny Fine, country manager Benelux at Watson-Marlow Fluid Technology Group, sums up by stating:

“It’s great to have our own breakthrough products proving their capabilities in company production facilities. The Qdos pumps are really helping the Bredel plant to excel in manufacturing.”

www.wmftg.com

Watson Marlow
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Watson-Marlow Fluid Technology Solutions

About us

Watson-Marlow Fluid Technology Group (WMFTG) peristaltic tube and hose pumps meet requirements including: value for money; low cost of ownership; reliability and ease of maintenance to the food and beverage, chemical, pharmaceutical, mining and many other industries.

We demonstrate how pumps deliver significant process efficiencies over the lifetime of the equipment. Whether performing flavouring addition in food processing, chemical metering in water treatment or mineral recovery, we have a solution which can cut pump downtime and reduce costs through higher accuracy metering and transfer. WMFTG has dedicated application engineers available to help customers make the right pump and tubing choice from a range providing microlitres per minute to 80 cubic metres per hour flow rates.

The only part of the pump to come into contact with the product is the tube or hose. This means there are no seals or valves that can wear or fail. Replacing the tube or hose can be performed quickly and safely. Peristaltic pump benefits include:

Total fluid containment with no seals No ancillaries Handle viscous and abrasive slurries and sludge Self-priming capability Dry running without damage to the pump In addition to their range of positive displacement pumps, Watson-Marlow Fluid Technology Group has added PTFE-lined chemical and industrial hoses to their range. Aflex hoses are reinforced to withstand the most severe conditions and use.

Where we supply to

Europe, Africa, Asia, Australia, South America, North America

Industries we supply to

Automation, Chemicals, Consultants, Components Electronics, Energy and Power, Food and Beverage, Glass Ceramics Cement, Metals and Minerals, OEM, Paper and Pulp, Pharmaceutical Cosmetics Toiletries, Plastics and Rubber, Recycling, Textiles, Tobacco, Water and Wastewater

  • Flexicon PF7 tabletop peristaltic liquid filling machine

  • Sterile ReNu SU Technology cartridge

  • Quantum and ReNu SU Technology cartridge - Make sterile connections in non-sterile environments

Photo of Watson Marlow Watson Marlow Send an email 06/08/2019
210 2 minutes read
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