... 3PC Thread Ball Valve(PN64) Size:1/4~2'', Full Port Material: 304 316 Standard: DIN BS water,oil.gas,some causticity fluid Stainless Steel Ball ... able to endure high pressure and dose not destroy valve .Seat: PTFE.material and good on-off feature ... : ISO, API, GB, BS, we are strict with the security and quality ,it was accepted by clients ... 2'', 2 1/2'', 3'', 4''PARAMETERS stainless steel ball valve