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NSN 4820-00-421-5869, 4820004215869
VALVE,SAFETY RELIEF

Federal Supply Classification
FSC 4820 - Valves, Nonpowered
National Item Identification Number
NIIN 004215869
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 4820-00-421-5869

National Stock Number (NSN) 4820-00-421-5869, or NIIN 004215869, (valve,safety relief) was assigned February 9, 1972 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There are 2 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 4 suppliers. Today, 4 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts.

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

This NSN is unique to one weapons system.

Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jan 02, 2005, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government has unlimited rights to the technical data, and the data package is complete. Valid AMCs: 1 and 2.

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 4820004215869 does not contain precious metals.

This NSN is associated to Schedule B 8481400000: safety or relief valves. The Schedule B End Use is listed as industrial machines, other. NAICS classification category 332911: industrial valve manufacturing.

This information was last updated on .


Technical Characteristics

DISK LOADING METHOD
(ADSU) SPRING
BONNET TYPE
(ADSR) PACKING RETAINING
CONNECTION STYLE
(AHNC) EXTERNAL SEAT FOR GASKET SEAL (BOSS) 1ST END
CONNECTION TYPE
(AWLS) THREADED EXTERNAL BOSS 1ST END
FLOW CONTROL DEVICE
(ADQU) DIAPHRAGM
NOMINAL THREAD SIZE
(CQJX) 0.437 INCHES 1ST END
OPENING PRESSURE SETTING
(CSDC) 4500.0 POUNDS PER SQUARE INCH
MATERIAL
(MATT) COPPER ALLOY 170 FLOW CONTROL DEVICE
MATERIAL
(MATT) STEEL COMP 630 BODY
MATERIAL
(MATT) STEEL COMP 630 SEAT
MAXIMUM OPERATING TEMP
(AEHZ) 330.0 DEG FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNED
(MEDA) NITROGEN, GASEOUS 2ND RESPONSE
MEDIA FOR WHICH DESIGNED
(MEDA) AIR 1ST RESPONSE
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED
(CWFD) 0.250 INCHES 1ST END
THREAD CLASS
(AAJD) 3A 1ST END
THREAD DIRECTION
(AAJF) RIGHT-HAND 1ST END
THREAD SERIES DESIGNATOR
(THSD) UNF 1ST END
THREAD QUANTITY PER INCH
(CMLP) 20 1ST END
VALVE OPERATION METHOD
(AQLR) AUTOMATIC
VALVE DISCHARGE FLOW RATE
(ADSY) 15.0 CUBIC FEET PER MINUTE
STYLE DESIGNATOR
(STYL) ANGLE
SURFACE TREATMENT
(SFTT) PAINT AND PRIMER
STYLE DESIGNATOR
(STYL) ERR-090
CONNECTION STYLE
(AHNC) G50 EXTERNAL SEAT FOR GASKET SEAL (BOSS) 1ST END

Manufacturer Part Numbers


Related Inventory

1003467-038AY01
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A51H9032-1
4820004215869
Condition NS
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4820004215869
4820-00-421-5869
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