1)Model: Choke valve PSI 1-4 2)According to: API 16C 3)Sytle: Camero/Shaffer 4)H2S resistance Valve cores and valve seats of throttle valves are made of cemented carbide materials, with good erosion resistance, which can greatly increase the life of the valve.1)Specification grade: PSL1-42)Performance grade: PR1-23)Material grade: AA,BB,CC,DD,EE,FF,HH4)Temperature grade:(-29ºC~121º) grade PU ...