Materials of main parts: Valve body:WCB CF8 CF8M BALL:304 316 Stem:304 316 Sealing:PTFE Packing:PTFE 2pc Ready-Package Ball Valve Description: 2pc Ready-Package Ball Valve Applicable media: Water oil. steam. Nitric acid. Acetic Acetic acid. Main size:1/4" 3/8" 1/2" 3/4" 1" 1-1/4" 1-1/2"2" 2-1/2" 3" 4" Nominal pressure: 1. 6. 2. 5. 4. 0. 6. 4Mpa