The QG cylinder group covers crust breaking and aluminum tapping equipment at electrolytic cells. Huatong lists six QG variants along with an all-steel QG-5LC configuration and a QG-22 variant for high and low pressure switching.
Models and selection data
| Model or series | Published configuration or function | Selection details |
|---|---|---|
| QG-1 / QG-2 / QG-3 / QG-4 / QG-5 / QG-6 | Six smelter cylinder variants | Select by the cell’s crust-breaking or tapping requirement and the machine drawing. |
| QG-5LC | Heavy-duty all-steel cylinder | Discuss impact, operating temperature, dust and lubrication with the supplier. |
| QG-22 | Smelter cylinder with high and low pressure switching | Specify both pressure levels and the machine control interface. |
| K25JK-25WH | Plate-mounted pneumatic poppet valve for the smelter cylinder application | Confirm the tail-end mounting and port arrangement. |
| KZG-08BH / KZGII | Electrolytic-cell pneumatic control cabinet listings | Confirm the valve group and interface against the cell configuration. |
Cylinder and installation data
Record the required bore and stroke, available air pressure, mounting dimensions, rod end and tool connection. Identify the ambient temperature and the load from impact and contamination. For replacement, confirm the actual model and assembly drawing because the listing also supports custom versions.
Valve and cabinet interfaces
For a tail-mounted valve, compare the mounting face, pilot arrangement and flow paths. If the cylinder is part of a cell cabinet system, document the cylinder ports and the controls used for crust breaking and feeding. Use the configuration drawing to select the required cabinet and valve assembly.