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#time gap #waiting period #hiatus #discontinuity #flow stop

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#clot #blockage #flow stop #vessel obstruction #embolism #thrombosis

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#pipe valve #inline valve #flow stop #pipeline control #shut-off valve #stop flow inline

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#drip barrier #water partition #flow stop #liquid containment #separation wall

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#shut-off valve #flow stop #mechanical valve #flow interrupter #valve mechanism #gate valve analogy