... .Pressure:150LB; 3.Material:Cast Iron, Ductile Iron, Stainless Steel, Bronze. Lug butterfly valve is widely used in metallurgical cast iron, petroleum, chemical industry, electric ... regulatory medium flow or use. BodyCast iron, nodular cast iron, carbon steel, stainless steelDiscCast iron, nodular cast iron, carbon steel, stainless steel, ... °C~150°C API 609 Standard Worm Gear Operation Butterfly Valve