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H6 - Federal Item Name Directory
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22074
DIAPHRAGM,ADJUSTMENT VALVE,RESPIRATOR
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FIIG: A23900
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Entry Date: Apr-01-1974
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Concept:
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Status: A
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Applicability: A
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Type: 0
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Definition: A round flexible sheet, which is part of the negative and positive pressure control valves. Its function is to form a tight seal over the adjusted circular openings in the control valves during part of the operating cycle.
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Corresponding NIINs: 12
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