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• Full bore design eliminates efficiently pressure drop and vortex, eliminates washing by solids in fluid.
• Mental-to-mental seal is used between bonnet and body, gate and seat, seat and body.
• The surface of gate and seat is welding overlay with hard alloy, which has feature of corrosion resistance and washing resistance.
• The balanced stem can balance the stem load, reduce load of stem thread and bearing to decrease operating torque.
• The bonnet and stem are designed with back seal, which can replace stem sealing under pressure.
• One side of bonnet is designed with sealant injection valve.
• Rising stem structure can indicate open and close of valve.
• Complete with different pneumatic (hydraulic) actuator upon user’s requirements.
• Working Pressure: 2000PSI～20000PSI
• Nominal Bore: 1.13/16"～9" (46mm～230mm)
• 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 | 
