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		                        | National Stock Number:
 4820-01-344-1617
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 013441617
 
 Description:
 VALVE,CHECK
 
 Detail:
 A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.
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 Manufacturer Information:
 
 | 3420WS,ASSY,1IN | 95995 | WALWORTH CO THE | 
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 Techincal Specification:
 
 | CRITICALITY CODE JUSTIFICATION | ZZZY |  | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS | 
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