http://www.guideindustry.com/butterfly-valves/Site description http://www.bitorq.com/Since 1981, BI-TORQ® offers quality plastic and stainless steel butterfly valves.Fri, 10 Sep 2010 16:42:07 GMT http://www.bvcusa.com/Butterfly Valves & Controls, as the exclusive USA Representative of Value Valves Co., supplies resilient seated wafer and lug butterfly valves, along with high-performance, triple eccentric and AWWA butterfly valves.Fri, 10 Sep 2010 16:42:07 GMT http://www.dynaquip.com/DynaQuip Controls offers a full line of butterfly valves, including automated butterfly valves available in ductile iron, aluminum, anodized aluminum, aluminum bronze and stainless steel. Styles include wafer and lug valve designs.Fri, 10 Sep 2010 16:42:07 GMT http://www.gemu.com/GEMÜ Valves is known as a market leader in developing, manufacturing and selling engineered diaphragm valves.Fri, 10 Sep 2010 16:42:07 GMT http://www.prattvalves.com/Henry Pratt Company, founded in 1901, is a butterfly valve manufacturer.Fri, 10 Sep 2010 16:42:07 GMT