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H6 - Federal Item Name Directory
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45114
VALVE,LIQUID-CHECK
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FIIG: A530B0
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Entry Date: Nov-10-1989
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Concept:
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Status: A
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Applicability:
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Type: 0
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Definition: A normally open valve which permits the passage of air or gases in both directions but prevents the passage of liquids in one direction. The action is controlled by a buoyant flow control device which rises against its seat when liquids are present therein.
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Basic INC: 70646
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Basic Name: VALVE
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Description: 1. A mechanism designed to control the flow of liquids or gases either within a closed system such as a pipeline or between the atmosphere and a closed system. It may be manually and/or power operated, actuated by predetermined pressure and/or temperature, or a pressure and/or temperature differential. Excludes: FAUCET (as modified); COCK (as modified); and THERMOSTAT (as modified).
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Corresponding NIINs: 23
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