International Appliance Manufacturing 2008 - (Page 19) general, the clearance volume to total volume ratio or compression ratio will determine how sensitive the pump or compressor will be to altitude effects. Make sure that the application specialist is aware of any requirement to work at varying altitudes so that the pump can be properly selected or designed to meet the application requirements. 10. Cost Considerations It’s just a fact of life. Cost plays a role in determining what kind of pump to buy, and who to buy it from. Sometimes the role of cost is secondary, sometimes primary – but it’s always present and should be one of the key factors considered. When analyzing cost, consider all elements of it – including first-cost, lifecycle operating and maintenance cost, cost of a unit failure, and so on. Let your manufacturer know which of these elements is your top priority. offers a wide array of standard pumps, modified or even allnew designs specific to the application requirements are also possible – given sufficient time for design, prototyping, testing and manufacturing. Point is, don’t put yourself or the pump supplier in a box that can lead to a pump that’s either overdesigned and too expensive, or under-designed and a recipe for failure. Consider all technologies and all application factors, as a team. Then share your data, thoughts and concerns with your supplier, and ask their advice. The result is likely to be the perfect pump at the lowest possible cost. STEP 4: INVOLVE YOUR PUMP SUPPLIER EARLY ON No matter how much an equipment designer might know about vacuum and pressure technology, it’s a good bet that the engineers at pump manufacturers know even more. Don’t underutilize this resource. While the manufacturer probably CUSTOM PUMP AND COMPRESSOR SOLUTIONS FOR OEMS WORLDWIDE Virtually every Thomas pump is customengineered to meet specific application requirements for efficiency, durability and price. It’s all in keeping with our focus on making OEMs more successful – with products like the Model 2107 diaphragm pump shown, or any of our other innovations. To learn more about the Thomas custom advantage, contact us today! TRULY gd-thomas.com IAM01084Thom.indd 1 12/14/07 1:14:05 PM © 2006 Gardner Denver Thomas, Inc. All rights reserved. International Appliance Manufacturing 2008 19 http://www.gd-thomas.com
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