| • Choke valves for needle type and external sleeve type are available for Christmas tree.
• The needle and core are made of hard alloy, with performances of wearing resistance, washing resistance and corrosion resistance.
• The external sleeve choke valve has advantages of low switch torque, throttling and shutting fluid.
• Working Pressure: 2000PSI～20000PSI
• Nominal Bore: 1.13/16"～7.1/16" (46mm～180mm)
• Working Medium: oil、natural gas、mud and gas containing H2S、CO2
• Working Temperature: -46°C～121°C（Class LU）
• Material Class: AA、BB、CC、DD、EE、FF、HH
• Specification level: PSL1-4
• Performance Requirement: PR1-2 | 
