•  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