Wouter Witzel Rubber lined valve successfully passed the 400.000 cycles Endurance test

For a specific high end application Wouter Witzel tested a DN 500 rubber lined valve. The valve was equipped with a fast acting pneumatic actuator provided with boosters and a PLC controlled positioner to open or close the valve within 2 seconds. Every 20.000 cycles the test came to a halt and the valve was both visually and mechanically inspected. Even after 400.000 cycles the valve was 100% bubble tight shut off.