Bild Wafer Style 150lb. Butterfly Valve with Stainless Disc Jump to Section Product Options Related Products Product Options Part Number Size Seal Material BFVW200 2" Nitrile Rubber liner Ductile Iron BFVW300 3" Nitrile Rubber liner Ductile Iron BFVW400 4" Nitrile Rubber liner Ductile Iron BFVW600 6" Nitrile Rubber liner Ductile Iron Related Products Bild 150# ASA Flanged King Combination Nipple Bild Threaded Lug Style Butterfly Valve Bild Wafer Style 150lb. Butterfly Valve with Aluminum Bronze Disc Bild Wafer Style 150lb. Butterfly Valve with Iron Disc