Description:
| Part number | Name of parts | Material | | 1 | Body | CrMoV steel | | 2 | Disc | CrMo steel | | 3 | Nether stem | Nitriding steel | | 4 | Piston | Stainless steel | | 5 | Upper stem | Nitriding steel | | 6 | Bonnet | CrMo steel | | 7 | Spring | Spring steel | | （kg） Weight | 226.2 | Installation instruction |
