Single ball air valve Design is acc. to ISO standard Flange:DIN,BS,ANSI,ISO Thread is acc. to ISO/BS/DIN DN40-150,PN10/16 Single ball air valveDesign is according to ISO standardFlange drilled according to DIN,BS,ANSI,ISO etc.Thread is according to BSP , NPTDN40-DN150 PN10/16/25ITEMPART NAMEMATERIAL1BODY DUCTILE IRON OR CAST IRON2 BUCKET DUCTILE IRON OR CAST IRON3 BALL FLOAT NBR OR ABS4 GASKET ...