Neil Posted January 22, 2013 Share Posted January 22, 2013 Can anyone recommend a good brand air operated diaphragm pump. We are using it for ethanol transfer and will also be doing filtration. We are considering a variable speed pump (0-30) gallons per minute. We were told by one source that the best material we should be looking at for the inner is a PTFE (Teflon) inner diaphragm. But another company is recommending a "Yamata" pump but they make their inner diaphragm from "Hytrel" (Carlson) We are also looking into Graco and Aro from another source. Does anyone have any first hand knowlege of either of these brands or can recommend a knowledgable source for more information on this subject. Thanks kindly Link to comment Share on other sites More sharing options...
Mash Posted January 23, 2013 Share Posted January 23, 2013 I use an ARO and love it. Ebay $370.00. Link to comment Share on other sites More sharing options...
Jedd Haas Posted January 23, 2013 Share Posted January 23, 2013 Neil, I suggest you google "chemical resistance chart" and check the rating of each material vs. ethanol. Link to comment Share on other sites More sharing options...
Neil Posted January 23, 2013 Author Share Posted January 23, 2013 Thank you both Link to comment Share on other sites More sharing options...
Accutek Posted January 24, 2013 Share Posted January 24, 2013 +1 for Aro and look at Wilden. Link to comment Share on other sites More sharing options...
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