Quality Inspection

During the produce of diesel suction control valves, there are totally 15 steps of quality inspection. They are selection of raw material, the inspection during production and inspection of finished products. In these 15 steps, one step missed can cause the bad quality or failure production, therefore, every process has specific workers to responsible, and that finally made our professional production team.

Here are some description of diesel suction control valves’ produce processes:

1. Inspect raw materials and make backup of raw materials test report;

2. Cutting raw materials with blanking machine;

3. Inspect raw material’s cutting diameter and length;

4. Forging and forming processing on the raw materials;

5. Inspectors conduct the all kinds of inspections of forming blank;

6. Remove the blank scrap ;

7. Blast the surface of the blank;

8. Conduct surface treatment inspection after sandblasting;

9. Perform blank machining;

10. Process diesel suction control valve’s body seal threading;

11. Process control valve body connection threading;

12. Process control valve’s hole;

13. Inspector conducts general inspection;

14. Install the diesel suction control valve;

15. The packing workshop finish product packaging.

Before sending out of the factory, the finished control valves still need to undergone through three inspections—full inspection, random inspection, and batch inspection. In these inspections, different brands of test benches are used to test the same diesel suction control valve for total of no less than three times.

Apart from above, diesel suction control valve is one of the most important running parts, it is also one of parts with the highest damage rate, even tiny particles can cause failure of control valve and even entire components. So it is important to make sure the whole produce process and installation and its working place are dust-free.