FDG series sequence closing device is provided with advanced hydraulic integration and modularized design. It comprises the cartridge valve, cam valve and other standard hydraulic parts. This device is characterized with simple structure, reliable operation, and convenient installation and adjustment. Its position of inflection point and two-segment closing speed are adjusted correctly.

Diameter: φ80mm, φ100mm, φ150mm; oil pressure grade: 2.5MPA, 4.0MPA, 6.3MPA.