- Hydraulic actuator installed on the top of the bonnet which controls the
open and close of the valve by hydraulic pressure.
- Metal seal between the body and bonnet.
- Backseat seal between the stem and the bonnet ,easy for the change of
sealing stuff under pressure.
- Sealing surface is hard-faced or the QBQ with the performance of anti-corrosion,wear-resistance.
- Low operating torque.