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H6 - Federal Item Name Directory
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15648
VALVE,ANTIBACK DRAFT,PROTECTIVE SHELTER
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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: An item consisting of a metal frame, to which is attached a hinged metal flapper plate. The fluctuating flapper plate automatically regulates the pressure between the outer air locks and the atmosphere of protective shelters. Excludes: DRAFT CONTROL, FLUE, AUTOMATIC.
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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: 8
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