Chemical Technology December 2015

Verder Pumps South Africa introduces a new double-acting high-pressure AODD pump Industrial pump manufacturer and dis- tributor Verder Pumps South Africa now offers a new, FDA-approved high-pressure, double-acting diaphragm pump, suitable for filter-press applications where the discharge pressure is higher than the available com- pressed air pressure.

FOCUS ON PUMPS & VALVES

The new VA25-HD (DA) high-pressure diaphragm pump features the traditional advantages associated with high-pressure pumps, including • stalling against closed discharge, which means that no safety pressure valve is required; • boosting pressure double the com- pressed air pressure; • no need for ancillary equipment to regu- late flow at raising discharge pressures. Some features that are unique to this pump include: • The new model has the same maximal flow rate as a standard Verderair VA25 diaphragm pump • It is double acting, therefore produces stable and efficient flow; • It has a low to high-pressure switch that allows for it to be more efficient. The VA25-HP (DA) is, therefore, the ideal pump for filter-press applications.

Example of a filter press application

with Verderair VA25-HP (DA)

low-pressure setting the pump operates in normal, low-pressure mode with optimum use of the compressed air. When operating in high-pressuremode, the pump boosts the liquid pressure to double the compressed air pressure; with flow rates double that of a single-acting, high-pressure pump.

The existing range of high-pressure diaphragm pumps, which are single-acting pumps, can deliver fluid pressures of up to double the supplied compressed air pres- sure. This results in a pulsating flow, high compressed air consumption and a 50 % reduction of the flow rate. In addition, the VA25-HP (DA) pump has a switch to change the pump operation from low pressure to high pressure. At the

For more information: Verder Pumps South Africa, email info@verder.co.za. APE pumps - Pumps at the heart of africa

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