The basic requirements for the hydraulic control valve of the horizontal hydraulic baler are as follows:
1. When the oil of the waste paper baler passes through the hydraulic valve, the pressure loss is small.
2. Sensitive action, reliable use, small shock and vibration during work, and long service life.
3. Good sealing performance, less internal leakage and no external leakage.
4. The structure is simple, compact and small in size.
5. Easy installation, adjustment and maintenance, and good versatility.