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Sub-zero hot chocolate

Sub-zero hot chocolate
What does it take to dispense a welcoming hot beverage in sub-zero ambient temperatures? Verderflex has the answer.

For many, hot chocolate is the perfect end to a day's skiing or snowboarding. Yet producing a perfect cup from a vending machine is far from an easy task in sub-zero temperatures. To maintain beverage quality the dosing pump required to deliver the correct measure has to provide a consistent flow rate. At average temperatures this isn't an issue. However at the low temperature of a ski resort the chocolate syrup becomes highly viscous and the flow rate is compromised.

For a standard pump this presents a problem but for the British pump manufacturer Verderflex it was easily solved by a modification to one of its OEM panel mounted peristaltic pumps. The M2000 is a high flow rate model and based on a patented, seal-less design. This ensures good hygiene as only the tube - in this case dovetail section silicone tube suitable for high temperature fluids - comes into contact with the chocolate syrup.

The Verderflex OEM range is already noted for its high suction capability. Even on standard models a pump will lift a liquid, such as water, by as much as 8.5m. However for this vending machine application even greater suction was required. This has been achieved on the M2000 unit without altering the flow rate by the fitting of a modified autoclavable cartridge. No internal backflow on this pump ensures accurate dosing without slip providing repeatability of typically ±0.2% and metering capability of ±2%. Thanks to the inherent benefits of the Verderflex OEM pump and the company's ability to tailor the model to suit the application, the vending machine manufacturer can guarantee the quality of its beverages, whatever the ambient temperature.

OEM pump options
The Verderflex OEM range of peristaltic pumps now accounts for 78% of its manufacturer's sales turnover and given the many features and benefits of these products it's easy to understand why.  They are available in a choice of styles from highly compact to the large and robust for arduous applications with wide-ranging motor, tube and flow rate options.  As a result these pumps are specified for diverse applications from precise dosing of surgical instrument disinfectant to the dispensing of heavy duty printing ink.

The Verderflex OEM pump is based on a patented, seal-less design which ensures that only the tube comes into contact with the fluid. This is important as it limits the possibility of contamination and controls chemical compatibility problems. The simplicity of this design makes tube replacement exceptionally easy and quick. Maintenance is also minimised by the pump's ability to run without any additional lubrication.

No internal backflow on the Verderflex Tube Pump ensures accurate dosing without slip providing repeatability of typically ±0.5% and metering capability of ±2%. Its gentle pumping action allows it even to be used for shear sensitive solids and liquids that can be damaged or altered by the action of other pumps. And as the pump is capable of self-priming it can also handle products that are likely to 'air' or 'gas'.  

Another benefit is the product's high suction capability. This allows the pump to lift a liquid, such as water, by as much as 8.5m giving greater flexibility in system design.
New to the OEM range is the easy tube loading stackable peristaltic pump that is ideal for multi-channel pumping, sampling and analysis and other laboratory research applications. With this in mind its components are made from acetal, polyamide and stainless steel. Designed for simple and trouble-free use this pump provides flow rates from a few millilitres up to 1.3 l/min.
Verder Tube Pumps

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