● Choke valve for needle type and external sleeve type are available for Christmas tree
● The needle and core are made of hard alloy, with performance of wearing resistance, washing resistance and corrosion resistance
● Working Pressure：2000Psi~20000Psi
● Nominal Bore：1-13/16”~9”（46mm~230mm）
● Working medium：Oil. Natural gas. Mud
● Working temperature：-46℃~121℃（Class L.U）
● Material Class：AA、BB、CC、DD、EE、FF
● Specification level：PSL1~PSL4
● Performance Requirements：PR1~PR2
●针型、外滑套式结构适用于井口采油（气）树设备，流量调节敏感，精确
●阀针和阀座采用硬质合金材质，具有耐磨、耐冲蚀性能
●工作压力：2000Psi~20000Psi
●公称通径：1-13/16”~4-1/16”（46mm~180mm）
●工作介质：石油、天然气、泥浆
●工作温度：-46℃~121℃（L.U级）
●材料级别：AA、BB、CC、DD、EE、FF
●规范级别：PSL1~PSL4
●性能级别：PR1~PR2
