22 | June 2016 | Modern Pumping Today www.modernpumpingtoday.com CASE STUDIES Positive Displacement Pumps Keep LPG Flowing P etroleum refiners have historically used flares to burn off waste gases to meet product specifications. This practice is increasingly at odds with environmental regulations designed to curb greenhouse gas emissions. Recent rules enacted by the U.S. Environmental Protection Agency (EPA) to further curtail air

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