Middle Line Wafer Butterfly Valve 2"~48" PN10/16(150lbs) CI,DI,SS,CS,ALB,Brass materials ISO, API, ASTM, ANSI, DIN, BS ... name Materialsbodycast iron, ductile iron, carbon steel, stainless steel, ALB, Brass, BronzeseatEPDM, PTFE, NBR, Viton, Buna, Hypalon, Neoprenedisccast iron, ductile iron ...