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NSN 4820-00-036-2081, 4820000362081
VALVE,SAFETY RELIEF

Federal Supply Classification
FSC 4820 - Valves, Nonpowered
National Item Identification Number
NIIN 000362081
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 4820-00-036-2081

National Stock Number (NSN) 4820-00-036-2081, or NIIN 000362081, (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. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, one supplier is listed as an Active supplier 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.

Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Dec 15, 2020, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The data or the rights to use the data needed to purchase this part from additional sources are not owned by the Government and it has been determined that it is uneconomical to purchase them. Valid AMCs: 1, 2, 3, 4 and 5.

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 4820000362081 does not contain precious metals.

This information was last updated on .


Technical Characteristics

BONNET ATTACHMENT METHOD
(ADST) BOLTED
BOLT HOLE QUANTITY
(AECS) 8 1ST END
BOLT HOLE QUANTITY
(AECS) 8 2ND END
OPENING PRESSURE SETTING
(CSDC) 635.0 POUNDS PER SQUARE INCH
NOMINAL OUTSIDE DIAMETER
(CWCD) 7.562 INCHES 2ND END
VALVE DISCHARGE FLOW RATE
(ADSY) 11420.0 POUNDS PER HOUR
VALVE OPERATION METHOD
(AQLR) AUTOMATIC
BOLT CIRCLE NOMINAL DIAMETER
(CWCT) 6.000 INCHES 2ND END
RAISED FACE NOMINAL HEIGHT
(CWDH) 0.250 INCHES 1ST END
FLOW CONTROL DEVICE
(ADQU) POPPET
BOLT HOLE NOMINAL DIAMETER
(CWCQ) 0.812 INCHES 2ND END
MATERIAL
(MATT) STEEL CORROSION RESISTING SEAT
MATERIAL
(MATT) STEEL CORROSION RESISTING STEM
MATERIAL
(MATT) STEEL CORROSION RESISTING FLOW CONTROL DEVICE
STYLE DESIGNATOR
(STYL) ANGLE
CONNECTION TYPE
(AWLS) FLANGE 1ST END
BOLT HOLE NOMINAL DIAMETER
(CWCQ) 0.688 INCHES 1ST END
FLANGE SHAPE
(ARKN) ROUND WITH HOLES 1ST END
NOMINAL THICKNESS
(CWCK) 1.000 INCHES 1ST END
FLANGE FACE DESIGN
(CWDF) PLAIN 2ND END
FLANGE FACE DESIGN
(CWDF) RAISED STRAIGHT 1ST END
STYLE DESIGNATOR
(STYL) ERR-090
RENEWABLE SEAT RING TYPE
(ADZH) THREADED
NOMINAL OUTSIDE DIAMETER
(CWCD) 6.500 INCHES 1ST END
BONNET TYPE
(ADSR) EXPOSED SPRING
FLANGE SHAPE
(ARKN) ROUND WITH HOLES 2ND END
CONNECTION TYPE
(AWLS) FLANGE 2ND END
BOLT CIRCLE NOMINAL DIAMETER
(CWCT) 5.000 INCHES 1ST END
NOMINAL THICKNESS
(CWCK) 0.812 INCHES 2ND END
RAISED FACE NOMINAL DIAMETER
(CWDL) 4.250 INCHES 1ST END
MATERIAL
(MATT) STEEL UNS K12220 BODY OR STEEL UNS K13020 BODY

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