Design: ANSI/ASME B16.34 Material: BODY: CF8M/316,CF8/304, WCB, EN1.4408/EN1.0619 BALL: CF8M/316,CF8/304, WCB, EN1.4408/EN1.0619 STEM: CF8M/316,CF8/304, Seat: PTFE/RPTFE O ring: VITON Stem:Blow-out proof stem Lever: Lever handle with lock or without lock device, butterfly handle Size: 1/4"~4"(DN8~DN100) end:thread end ,flange end ,butt weld end,socket weld end Thread end: ASME B1.20.1, BS21(NPT), BSP, BSPP, DIN259/2999, ISO228/1, ISO7/1 Work pressure: 1000PSI,2000PSI Test and inspection: API 598 Casting Art:invertment casting Suitable medium: Frash water, oil, air, and some corrosive liquids Applicable temperature: -40 degree~+200 degree 
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