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Test, two-step cap

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Part number 996 106 447 00

  1. Generate excess pressure (step 1)
  2. The pressure relief valve opens at an excess pressure of approx. 1.4 bar; the pressure then slowly decreases again, and the valve closes at 1.0 bar. If the pressure decreases further, replace the cap.
  3. If the test pressure of step 1 is maintained, test step 2. Apply excess pressure to the pressure relief valve of step 1 by pumping rapidly. The pressure relief valve of step 2 must open at an excess pressure of approx 1.8 bar. If the valve does not open, replace the cap.
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