Dixon BFVW300 Ductile Iron Wafer Style Butterfly Valve with Stainless Steel Disc and Buna-N liner, 3" Size, 200 psi Pressure: Industrial Butterfly Valves: Amazon.com: Industrial & Scientific
ANSI Standard Wcb Di Ci Stainless Steel Barss EPDM Seat Water Resilient Wafer Lug Lugged Type Double Flange Industrial Butterfly Valve Gate Swing Check Valves - China Butterfly Valves, ANSI Standard Valve
Advantages of Using an Industrial Butterfly Valve
Butterfly Valves: The Ultimate Guide About Butterfly Valve - Huamei
Smith Cooper 0160 Series 6 in. Cast Iron Lever Operated Butterfly Valve w/Nitrile Rubber Seals, Iron Nickle Plated Disc, Lug Style - John M. Ellsworth Co. Inc.
HP250II® - Henry Pratt Company
butterfly valves | industrial resilient seated butterfly valve, Series 70/71
High Performance Butterfly Valves – VSI Waterworks