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NSN 4820-00-287-4072, 4820002874072
VALVE,SAFETY RELIEF

Federal Supply Classification
FSC 4820 - Valves, Nonpowered
National Item Identification Number
NIIN 002874072
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 4820-00-287-4072

National Stock Number (NSN) 4820-00-287-4072, or NIIN 002874072, (valve,safety relief) was assigned January 1, 1961 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There are 3 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are 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 somewhat common among different platforms, belonging to 3 different weapons systems.

Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Aug 02, 2004, this NSN's acquisition method was noted as: Not established. Not established.

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 4820002874072 contains an unknown precious metal.

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

CONNECTION STYLE
(AHNC) G42 FLARED (TUBE) 2ND END
STYLE DESIGNATOR
(STYL) ERR-090
DISK LOADING METHOD
(ADSU) SPRING
BONNET TYPE
(ADSR) INSIDE SPRING
BONNET ATTACHMENT METHOD
(ADST) INTEGRAL
CONNECTION STYLE
(AHNC) FLARED (TUBE) 2ND END
CONNECTION STYLE
(AHNC) PLAIN (PIPE) 1ST END
CONNECTION TYPE
(AWLS) THREADED EXTERNAL PIPE 1ST END
CONNECTION TYPE
(AWLS) THREADED EXTERNAL TUBE 2ND END
FEATURES PROVIDED
(CBBL) VALVE STEM LOCK SHIELD AND PRESSURE TIGHT OUTLET SIDE
FLOW CONTROL DEVICE
(ADQU) DISK
NOMINAL THREAD SIZE
(CQJX) 0.375 INCHES 1ST END
NOMINAL THREAD SIZE
(CQJX) 0.375 INCHES 2ND END
OPENING PRESSURE SETTING
(CSDC) 200.0 POUNDS PER SQUARE INCH
MATERIAL
(MATT) COPPER ALLOY SEAT
MATERIAL
(MATT) COPPER ALLOY BODY
MATERIAL
(MATT) RUBBER CHLOROPRENE CLASS CR FLOW CONTROL DEVICE
MAXIMUM OPERATING TEMP
(AEHZ) -40.0 DEG FAHRENHEIT 1ST RESPONSE
MAXIMUM OPERATING TEMP
(AEHZ) 225.0 DEG FAHRENHEIT 2ND RESPONSE
MEDIA FOR WHICH DESIGNED
(MEDA) REFRIGERANT 12 1ST RESPONSE
MEDIA FOR WHICH DESIGNED
(MEDA) REFRIGERANT 22 2ND RESPONSE
MEDIA FOR WHICH DESIGNED
(MEDA) REFRIGERANT 500 3RD RESPONSE
MEDIA FOR WHICH DESIGNED
(MEDA) REFRIGERANT 502 4TH RESPONSE
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED
(CWFD) 0.375 INCHES 1ST END
NOMINAL PIPE SIZE ACCOMMODATED
(AAAR) 0.375 INCHES 2ND END
SEAT ANGLE
(CQRB) 45.0 DEGREES 1ST END
THREAD CLASS
(AAJD) 3A 2ND END
THREAD DIRECTION
(AAJF) RIGHT-HAND 1ST END
THREAD DIRECTION
(AAJF) RIGHT-HAND 2ND END
THREAD SERIES DESIGNATOR
(THSD) NPT 1ST END
THREAD SERIES DESIGNATOR
(THSD) UNF 2ND END
VALVE OPERATION METHOD
(AQLR) AUTOMATIC
STYLE DESIGNATOR
(STYL) ANGLE
CONNECTION STYLE
(AHNC) G46B PLAIN (PIPE) 1ST END

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