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ISO 80369 Annex G | Small-Bore Connectors | Axial-Torsion Testing

ISO 80369 is a series of standard test methods intended to evaluate the performance requirements for small-bore connectors for liquids and gases in medical applications. Each of the annexes within the testing standard describe specific test procedures for evaluating the mechanical properties of small-bore connectors. These annexes allow modification to test conditions as necessary for each application.

Annex G – Principle: The security of connection between male and female locking connectors is determined by inspecting the connection after applying specified unscrewing torque. The connection is expected to be maintained.

The standard includes test methods that are derived from ISO 594 with some changes to methods that contained subjective acceptance criteria. It is recommended to read the entire specification in the relevant ISO publication prior to running any of the annexes.

ISO 80369 Annex G | Small-Bore Connectors | Axial-Torsion Testing

Slip connector:

  1. Apply an axial force while rotating the slip connector under test in torsion.
  2. Make sure the rotation does not exceed 90°.
  3. Reverse the torque and apply an unscrewing torque force.
  4. Hold the unscrewing torque at the specified period without applying any supplementary force in other directions.

Locking connector:

  1. Apply an axial force while rotating the connector under test in torsion.
  2. Reverse the torque and apply an unscrewing torque force.
  3. Hold the unscrewing torque at the specified period without applying any supplementary force in other directions.

ISO 80369 Annex G | Small-Bore Connectors |  Axial-Torsion Testing

ISO 80369 Annex G | Small-Bore Connectors |  Axial-Torsion Testing

ISO 80369 Recommended Equipment
Testing System
Fixturing
  • Custom Vise Grip Package per ISO 80369
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