2PC Thread Ball Valve(PN64) Size:1/4~4'', Full Port Material: ... able to endure high pressure and dose not destroy valve.Seat: PTFE.material and good on-off feature.Working ... manufacture adoption: ISO, API, GB, BS, we are strict with the security and quality ,it was accepted by clients and ... 1/4", 3/8", 1/2", 3/4", 1"1 1/2'', 2'', 2 1/2'', 3'', 4''PARAMETERS MATERIAL LIST 3/4"stainless steel ball valve