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: 1/2" 3/4" 1" 1-1/4" 1-1/2"2" Materials of main parts: Valve body: WCB ,CF8, CF8M Packing: PTFE. Sealing: PTFE