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NSN 4820-00-104-8746, 4820001048746
VALVE,SAFETY RELIEF

Federal Supply Classification
FSC 4820 - Valves, Nonpowered
National Item Identification Number
NIIN 001048746
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.
Availability: Readily Available Qualified Suppliers: Currently qualifying suppliers

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DLMS® Summary

National Stock Number 4820-00-104-8746

National Stock Number (NSN) 4820-00-104-8746, or NIIN 001048746, (valve,safety relief) was assigned July 1, 1968 in the Federal Logistics Information System (FLIS). NIIN 001048746 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 2 manufacturer part numbers associated with this NSN. None of the associated 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 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 4820001048746 contains an unknown precious metal.

This information was last updated on .


Technical Characteristics

FLOW CONTROL DEVICE
(ADQU) POPPET
CONNECTION STYLE
(AHNC) EXTERNAL SEAT FOR GASKET SEAL (BOSS) 1ST END
CONNECTION STYLE
(AHNC) G50 EXTERNAL SEAT FOR GASKET SEAL (BOSS) 1ST END
SURFACE TREATMENT
(SFTT) ANODIZE
CONNECTION TYPE
(AWLS) THREADED EXTERNAL BOSS 1ST END
THREAD SERIES DESIGNATOR
(THSD) UNF 1ST END
DISK LOADING METHOD
(ADSU) SPRING
MAXIMUM OPERATING TEMP
(AEHZ) 300.0 DEG FAHRENHEIT 1ST RESPONSE
MAXIMUM OPERATING TEMP
(AEHZ) 300.0 DEG FAHRENHEIT 2ND RESPONSE
MAXIMUM OPERATING TEMP
(AEHZ) 300.0 DEG FAHRENHEIT 3RD RESPONSE
NOMINAL THREAD SIZE
(CQJX) 0.437 INCHES 1ST END
MEDIA FOR WHICH DESIGNED
(MEDA) NITROGEN, GASEOUS 2ND RESPONSE
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED
(CWFD) 0.250 INCHES 1ST END
MEDIA FOR WHICH DESIGNED
(MEDA) AIR 1ST RESPONSE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
(STDC) MIL-A-8625,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE SEAT
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE AND MIL-R-7362,TYPE 2 FED SPEC 1ST MATERIAL RESPONSE FLOW CONTROL DEVICE
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE BODY
STYLE DESIGNATOR
(STYL) STRAIGHT THRU W/BAFFLE
THREAD CLASS
(AAJD) 3A 1ST END
MATERIAL
(MATT) ALUMINUM ALLOY 2024 BODY
MATERIAL
(MATT) ALUMINUM ALLOY 2024 SEAT
MATERIAL
(MATT) ALUMINUM ALLOY 2024 AND RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICE
MAXIMUM OPERATING PRESSURE
(CQGM) 200.0 POUNDS PER SQUARE INCH 3RD RESPONSE
MAXIMUM OPERATING PRESSURE
(CQGM) 200.0 POUNDS PER SQUARE INCH 1ST RESPONSE
MAXIMUM OPERATING PRESSURE
(CQGM) 200.0 POUNDS PER SQUARE INCH 2ND RESPONSE
THREAD DIRECTION
(AAJF) RIGHT-HAND 1ST END
MEDIA FOR WHICH DESIGNED
(MEDA) OIL 3RD RESPONSE
STYLE DESIGNATOR
(STYL) ERR-090
VALVE DISCHARGE FLOW RATE
(ADSY) 1.0 CUBIC FEET PER MINUTE
OPENING PRESSURE SETTING
(CSDC) 7.0 POUNDS PER SQUARE INCH
VALVE OPERATION METHOD
(AQLR) AUTOMATIC

Manufacturer Part Numbers


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