female npt ball valve 1.MOQ:500pcs 2.OEM factory 3.Thread standard:BSPT/NPT/Metric Thread 3.CE,EN331,SGS,ISO9002:2008 female npt ball valve ComponentMaterial1Bodybrass2BallIron3StemIron4O-ringPTFE5Packing RingsPTFE6ScrewIron7Handforged steel DLF-116 female npt ball valve