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NSN 4820-00-542-5820, 4820005425820
VALVE,SAFETY RELIEF

Federal Supply Classification
FSC 4820 - Valves, Nonpowered
National Item Identification Number
NIIN 005425820
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 4820-00-542-5820

National Stock Number (NSN) 4820-00-542-5820, or NIIN 005425820, (valve,safety relief) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NSN does not replace any other NSNs.

There are 3 manufacturer part numbers associated with this NSN. 2 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 3 suppliers. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, there are no suppliers that 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 unique to one weapons system.

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: Suitable for competitive acquisition for the first time. (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 4820005425820 contains an unknown precious metal.

This information was last updated on .


Technical Characteristics

FLOW CONTROL DEVICE
(ADQU) DISK
DISK LOADING METHOD
(ADSU) SPRING
BONNET ATTACHMENT METHOD
(ADST) THREADED
CONNECTION TYPE
(AWLS) THREADED EXTERNAL PIPE 1ST END
THREAD DIRECTION
(AAJF) RIGHT-HAND 1ST END
VALVE OPERATION METHOD
(AQLR) AUTOMATIC
STYLE DESIGNATOR
(STYL) ERR-090
THREAD SERIES DESIGNATOR
(THSD) NPT 1ST END
MATERIAL
(MATT) COPPER ALLOY STEM
STYLE DESIGNATOR
(STYL) STRAIGHT THRU
CONNECTION STYLE
(AHNC) PLAIN (PIPE) 1ST END
SPECIAL FEATURES
(FEAT) INLET BORED FOR HIGH PRESSURE
MATERIAL
(MATT) COPPER ALLOY BODY
CONNECTION STYLE
(AHNC) G46B PLAIN (PIPE) 1ST END
ADJUSTABLE PRESSURE RANGE
(CQCY) +551.0 TO 800.0 POUNDS PER SQUARE INCH
MATERIAL
(MATT) COPPER ALLOY SEAT
ADJUSTABLE PRESSURE RANGE
(CQCY) +551.0/+800.0 POUNDS PER SQUARE INCH
NOMINAL THREAD SIZE
(CQJX) 0.500 INCHES 1ST END
MATERIAL
(MATT) COPPER ALLOY FLOW CONTROL DEVICE
NOMINAL PIPE SIZE ACCOMMODATED
(AAAR) 0.500 INCHES 1ST END
BONNET TYPE
(ADSR) INSIDE SPRING
THREAD QUANTITY PER INCH
(CMLP) 14 1ST END
MAXIMUM OPERATING PRESSURE
(CQGM) 800.0 POUNDS PER SQUARE INCH SINGLE RESPONSE

Manufacturer Part Numbers


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