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NSN 4820-00-640-5450, 4820006405450
VALVE,SAFETY RELIEF

Federal Supply Classification
FSC 4820 - Valves, Nonpowered
National Item Identification Number
NIIN 006405450
Codification Country
United States
Item Name Code
INC 05488
Criticality
(X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code
(N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.
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DLMS® Summary

National Stock Number 4820-00-640-5450

National Stock Number (NSN) 4820-00-640-5450, or NIIN 006405450, (valve,safety relief) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). NIIN 006405450 was cancelled on December 15, 2017, with a cancelled status of "Item is Cancelled - Inactive." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.

There are no manufacturer part numbers associated to this NSN.

This part number has not been procured by the US Government in over 5 years.

This NSN is assigned to Item Name Code (INC) 05488. [A VALVE DESIGNED TO AUTOMATICALLY RELEASE EXCESSIVE PRESSURES. IT IS ACTUATED BY STATIC PRESSURE UPSTREAM OF THE VALVE AND IS USED AS A SAFETY VALVE OR RELIEF VALVE, AND MAY BE SET TO CLOSE AT A PREDETERMINED PRESSURE. IT IS NOT DESIGNED FOR REGULATION OF CONTINUOUSLY FLUCTUATING LOADS. IT MAY BE INLINE OR CARTRIDGE (MANIFOLD) DESIGN. EXCLUDES:VALVE (1), RELIEF, PRESSURE AND TEMPERATURE.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4820006405450 contains an unknown precious metal.

This information was last updated on .

Technical Characteristics

THREAD QUANTITY PER INCH
(CMLP) 11-1/2 1ST END 11-1/2 2ND END
VALVE OPERATION METHOD
(AQLR) AUTOMATIC
CONNECTION TYPE
(AWLS) THREADED INTERNAL PIPE 1ST END
NOMINAL THREAD SIZE
(CQJX) 1.000 INCHES 1ST END
THREAD SERIES DESIGNATOR
(THSD) NPT 2ND END
THREAD DIRECTION
(AAJF) RIGHT-HAND 2ND END
CONNECTION STYLE
(AHNC) G9 PLAIN 1ST END G46B PLAIN 2ND END
CONNECTION TYPE
(AWLS) THREADED EXTERNAL PIPE 2ND END
NOMINAL THREAD SIZE
(CQJX) 1.000 INCHES 2ND END
STYLE DESIGNATOR
(STYL) C1 ANGLE
STYLE DESIGNATOR
(STYL) ERR-090
THREAD SERIES DESIGNATOR
(THSD) NPT 1ST END
THREAD SERIES DESIGNATOR
(THSD) NPT 1ST END NPT 2ND END
FLOW CONTROL DEVICE
(ADQU) DISK
DISK LOADING METHOD
(ADSU) SPRING
CONNECTION STYLE
(AHNC) G9 PLAIN,OPTIONAL END(PIPE) 1ST END
CONNECTION STYLE
(AHNC) PLAIN,OPTIONAL END(PIPE) 1ST END
STYLE DESIGNATOR
(STYL) ANGLE
NOMINAL PIPE SIZE ACCOMMODATED
(AAAR) 1.000 INCHES 1ST END
CONNECTION STYLE
(AHNC) PLAIN (PIPE) 2ND END
FEATURES PROVIDED
(CBBL) PRESSURE TIGHT OUTLET SIDE
THREAD QUANTITY PER INCH
(CMLP) 11-1/2 1ST END
MATERIAL
(MATT) COPPER ALLOY OVERALL
THREAD QUANTITY PER INCH
(CMLP) 11-1/2 2ND END
NOMINAL PIPE SIZE ACCOMMODATED
(AAAR) 1.000 INCHES 2ND END
OPENING PRESSURE SETTING
(CSDC) 10.0 POUNDS PER SQUARE INCH
SPECIAL FEATURES
(FEAT) LIFTING LEVER
THREAD DIRECTION
(AAJF) RIGHT-HAND 1ST END
THREAD DIRECTION
(AAJF) RIGHT-HAND 1ST END RIGHT-HAND 2ND END
CONNECTION STYLE
(AHNC) G46B PLAIN (PIPE) 2ND END

Manufacturer Part Numbers

4820006405450

006405450

006405450


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