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Michael Smith Engineers supplies pumps for Flotech skids

Pumps specialist Michael Smith Engineers is supplying Flotech Performance Systems with Viking's SG range of external gear pumps for use in the company's additive and dye injection skids for petroleum and chemical applications.

These skids vary in scope from injection hardware skids through to full turnkey systems designed to meet individual customer requirements and can incorporate features such as additive storage, secondary containment pipework, pumps and pump control. For many additive applications, the primary function of the pumps is to ensure that they generate sufficient differential pressure for the additive to be injected efficiently and smoothly into the main process line.

In most installations the operation of the pump and how it is controlled is crucial to the overall performance of the skid. Duty/standby pump systems will be controlled to provide alternate operation and to also start the standby pump should the duty pump fail to maintain the required differential pressure. Depending on the application, they may need to cover flow ranges up to 160 lit/min and differential pressures as high as 16 bar. Also in many situations the pumps need to be certified for use in ATEX hazardous locations.

The pumps perform a vital role on these skids and must be able to cope with the challenges of handling high differential pressures, even when pumping low viscosity liquids.

For this reason Flotech Performance Systems have used Viking SG Series External Gear pumps on many applications.
Supplied by Michael Smith Engineer, Viking's SG range of spur gear design external gear pumps are ideally suited to the demands of Flotech's injection skids as they are able to pump low volumes of liquid at high differential pressures. As a consequence they provide a smooth, accurate output which can be easily monitored and adjusted, resulting in process consistency without wastage.

Viking SG Series pumps are designed to ensure reliability in challenging high pressure, low capacity applications as illustrated by their performance over many years on Flotech's additive and injection skids. As seal leakage is the primary cause of pump downtime, Flotech often specifies its SG Series external gear pumps to be supplied with leak-free magnetic couplings. Viking SG pumps are available in 29 sizes for capacities up to 45m3/hr at differential pressures to 172 bar and operate on liquids with a viscosity range of 1.0 to 250,000 cSt. Materials of construction are ductile iron or cast iron and they can be supplied in a choice of lip seal, mechanical seal or mag-drive options.