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  • Bolt center: 28mm/31mm/38mm Flow characteristic: when applying pressure of1.47 KPa at the inlet of secondary air intake valve, flow is bigger than1.8m3/h (flow can be designed as requested.) Reverse leakage: when applying 4.9 KPa at air outlet and the air inlet is open, leakage rate equals to or is smaller than 3L/min.
  • Flow characteristic: when applying pressure of1.47 KPa at the inlet of secondary air intake valve, flow is bigger than1.8m3/h Reverse leakage: when applying 4.9 KPa at air outlet and the air inlet is open, leakage rate is smaller than 3L/min. Riveting shall be tightened and no parts shall be loosened. Surface is smooth and without rust.
  • Bolt center: 28mm Flow characteristic: when applying pressure of1.47 KPa at the inlet of secondary air intake valve, flow is bigger than1.8m3/h (flow can be designed as requested.) Reverse leakage: when applying 4.9 KPa at air outlet and the air inlet is open, leakage rate is smaller than 3L/min
  • Bolt center:56mm Diameter of mounting recess:6.5mm Diaphragm chamber sealing: after applying pressure of -40KPa at the negative pressure port and then stopping for 5 seconds, the pressure drop is smaller than 667Pa. Reverse leakage: when applying 4.9 KPa at air outlet and the air inlet is open, leakage rate is smaller than 3L/min. The whole chamber sealing: when plugging up the air outlet and applying pressure of 98KPa, leakage rate is smaller than 0.02L/min. Note: Movement characteristic can be designed as requested.
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