| Moder | Part Code | Material | Color |
| CINDY-16-B-SND-S200-L-G6-6-58 | 803001572/20100069 | Iron | Golden |
In addition, if the pipeline between the luffing balance valve and the main valve breaks, it also has the function of preventing the luffing cylinder from retracting suddenly.Applicable toQY35K5 QY40K QY50K-I QY50KA QY70K-1 models