Wafer Type with Worm Gear Design and Manufacture:Ansi/AWWAC509/API609 Face to Face:API 609/Bs5155/Iso 5752/Asme b16.1/Din Insepction:API609 Size:2¡å-48" Operation:Grear Worm Temperalure:-10-120¡æ Fire-safe,API607,API6FA&BS EN 12266-2 Material:GG25 GGG40