Stainless Steel Ball Valve,with threaded ends ,BSPT,NPT . Applicable media: Water Oil ,Steam, Nitric acid, Acetic acid. Nominal pressure: 1.6. 2.5. 4.0. 6.4Mpa Main size: 1/4" 3/8" 1/2" 3/4" 1" 1-1/4" 1-1/2"2" 2-1/2" 3" 4" Materials of main parts: Valve body: WCB ,CF8, CF8M Stem: 304 316 BALL: 304 316 Packing: PTFE. Sealing: PTFE