Features:Blow-out Proof Stem.Pressure Balance Hole in Ball Slot.Various Thread Standards Available.Lock device.Standards:Design: ASME B16.34.Wall Thickness: ASME B16.34.Pipe Thread: ASME B1.20.1.BS21.DIN 2999/259, ISO 228/1.JIS B 0203, IS0 7/1.Inspection & Testing: MSS SP-110, EN 12266.Parts Name & Material1.Body: CF8M, CF8, WCB.2.Body Gasket: PTFE.3.Cap: CF8M, CF8, WCB.4.Seat: PTFE, RPTFE, PPL.5.Ball: CF8M: CF8.6.Stem: SUS316: SUS304.7.Thrust Washer: PTFE.8.Stem Packing: PTFE: RPTFE.9.Packing gland: SUS304.10.Sprinq Washer: SUS304.11.Stem Nut: A193-B8.12.Lockinq Device: SUS301.13.Handle: SUS304.14.Handle Cover: Plastic.Dimension & Thread