Bredel Hose Pumps Replace Piston Pumps On Coastal Concrete Grouting Projects

Watson Marlow 02/11/2016

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Bredel hose pumps from Watson-Marlow Fluid Technology Group (WMFTG) have replaced piston pumps on a series of prestigious €1.8 million concrete grouting projects performed in seas around the Chinese coastline

A total of 90 Bredel pumps have been ordered for drawing the abrasive cement/sand/water slurry from the mixing tanks into the holds of the seafaring vessels, and for metering the grouting accordingly. The pumps have overcome leakage and wear issues associated with the previous piston pumps, and subsequently reduced downtime, maintenance and spares costs.

In China, specially equipped engineering boats (about the size of small tugs) are fitted with concrete-carrying silos or holds. The boats ferry between tidal, pile driving and quayside construction sites to deliver concrete grouting in line with project requirements.

Proven to be the best choice

Earlier this year, WMFTG China secured five orders comprising a total of 90 Bredel heavy duty hose pumps required for a series of new grouting projects. Including 45 Bredel 65 and 45 Bredel 80 models, the pumps will be installed across six engineering boats (15 pumps aboard each vessel).

Bredel hose pumps have been selected in place of piston pumps, which on previous grouting projects created issues such as fluid leakage, component wear and unplanned maintenance. In order to comply with local environmental regulations and meet higher quality requirements, WMFTG got the opportunity to supply a Bredel pump for trial.

The success of the trial proved that Bredel technology could overcome the leakage and wear problems, thus reducing costs through greater uptime and reduced maintenance and spare parts. In addition, a safer working environment would be created.

Leakage and wear eliminated

The reason that the previous piston pumps struggled was the abrasive nature of the cement, sand (8%) and water mix (0.7 water-to-cement ratio). Discharged into the pile driver at pressures of over 10 bar, conventional pumps are subjected to continual wear problems.

Conversely, in Bredel pumps, nothing but the hose touches the fluid. This means that the only wear part is the hose, which can be quickly and easily replaced if required. As a result, Bredel is the pump of choice for all slurries, as well as viscous, shear-sensitive or aggressive fluids.

The larger Bredel 80 models used on the grouting projects in China draw the slurry from the mixing tanks into the hold at 330 l/min. These pumps run for approximately 2-hour periods at 29 rpm.

The smaller Bredel 65 pumps, which meter the grouting, run for the same amount of time (at 30 rpm), at a flow rate of 200 l/min. The running time of the pumps is controlled automatically via a PLC.

WMFTG has already delivered 30 Bredel pumps for the first two engineering boats, and the customer is now gearing up ready to start site. Another 60 pumps are in production and will follow in two months.

For further information please contact:

Joanne Lucas – Group Marketing PR Coordinator
joanne.lucas@wmftg.com
D: +44 (0) 1326 370 214

www.wmftg.com

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Watson-Marlow Fluid Technology Solutions

01326370370
info@wmftg.co.uk
https://www.wmfts.com/
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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

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