Material
Body: Steel DN St/37.0/37.8
Ball: Stainless steel.AIS1304
Stem: Stainless steel.AIS1303
Stem sealing: FPM
Ball sealing: Carbon strengthening PTFE
Handle
DN15-150 Galvanized steel
DN200-250 Spraying carbon steel
DN250-1400 Hand wheel instead of handle
We suggested operating Hand wheel within DN300-1400.