Endurance test. The gas tube and its coupling(s) shall be tested for an endurance test consisting out of 100,000 cycles. One cycle consist out of pressure ramp from 15 per cent·WP up to WP. After the endurance test, the gas tube and its coupling(s) need to comply with the leakage test of Annex 16, paragraphs 5., 6. and 7 and with the overpressure test according to Annex 16, paragraph 4.
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