Evaluation of Cracking Pressure Ratio at Proportional Directional Control Valves for Different Valve Control Signals and Supply Pressures

Dağdelen M., Sarıgeçili M. İ.

III. International Turkic World Congress on Science and Engineering, Niğde, Turkey, 14 - 15 June 2021, pp.849-856

  • Publication Type: Conference Paper / Full Text
  • City: Niğde
  • Country: Turkey
  • Page Numbers: pp.849-856
  • Çukurova University Affiliated: Yes


In this study, the determination of cracking pressure ratio which is important in pneumatic proportional directional control valves was discussed. MPYE-5 series proportional directional control valve, widely used in precision pneumatic control applications, was examined at different valve control signals and supply pressures, and the cracking pressure ratio parameter was mapped depending on these two different operating conditions. In order to quickly determine cracking pressure ratio, the valve parameter determination methods mentioned in previous studies were automated and the cracking pressure ratio value was determined quickly. As a result of the study, it has been suggested that the valve has quite different cracking pressure ratio values in small valve openings (close to the middle position) and this variability should be taken into account in precision control applications. In addition, it has been concluded that the supply pressure also affects the cracking pressure ratio value. The results obtained have been presented graphically and these results have been intended to be a reference for future pneumatic precision control applications.