- Fixed design of spherical support plate structure
- Structural design of BTL combination seal valve seat
- Design of double block and discharge function (DBB) structure
- Design of automatic pressure relief structure for valve chamber overpressure
- Multi-combination sealing structure and anti blowout design of valve stem
- Fire safety structure design
- Anti-static structure design
- Structural design of discharge and venting functions
- Emergency sealing grease structure design
- Mechanical limit design for position indication and on/off
