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FIGURE 50
Test Time Occlusion Test Pass
The figure above illustrates a typical occlusion test sequence when using a
coupling valve to seal the open end of the product.
The product is pressurized while the clamping fixture seals the open end
of the product. The pressure drops below the reject limit within the
established test time after the sealing device opens and allows the product
to flow to atmosphere.
The significant pressure drop in the product indicates that the product
under test flows freely to atmosphere and thus is not blocked.
Test Time Occlusion Test Fail
If the flow path were to be blocked, the product would fail because the air
loss from the product would not be enough for pressure to drop more than
the reject level in the test time.
Fill Stabilize Test Dump
Zero
Couple
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