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NSN 4820-00-905-4665, 4820009054665
VALVE,SAFETY RELIEF

Federal Supply Classification
FSC 4820 - Valves, Nonpowered
National Item Identification Number
NIIN 009054665
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 4820-00-905-4665

National Stock Number (NSN) 4820-00-905-4665, or NIIN 009054665, (valve,safety relief) was assigned January 1, 1960 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There is only one manufacturer part number associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. 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 Apr 02, 1991, this NSN's acquisition method was noted as: Acquire, for the first time, directly from the actual manufacturer rather than the prime contractor who is not the actual manufacturer. The rights to use the data needed to purchase this part from additional sources are not owned by the Government and cannot be purchased. 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 4820009054665 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
ADJUSTABLE PRESSURE RANGE
(CQCY) +20.5 TO 21.5 POUNDS PER SQUARE INCH
BONNET TYPE
(ADSR) INSIDE SCREW
BONNET ATTACHMENT METHOD
(ADST) INTEGRAL
CONNECTION STYLE
(AHNC) FLARED (TUBE) 1ST END
CONNECTION TYPE
(AWLS) THREADED EXTERNAL TUBE 1ST END
FEATURES PROVIDED
(CBBL) BONNET PACKING AND PRESSURE TIGHT OUTLET SIDE
FLOW CONTROL DEVICE
(ADQU) POPPET
OPENING PRESSURE SETTING
(CSDC) 21.5 POUNDS PER SQUARE INCH
MATERIAL
(MATT) ALUMINUM ALLOY 2024 FLOW CONTROL DEVICE
MATERIAL
(MATT) STEEL COMP MTX1015 SEAT
MAXIMUM OPERATING PRESSURE
(CQGM) 21.50 POUNDS PER SQUARE INCH SINGLE RESPONSE
MEDIA FOR WHICH DESIGNED
(MEDA) SULPHUR DIOXIDE, GASEOUS SINGLE RESPONSE
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED
(CWFD) 0.250 INCHES 1ST END
NOMINAL THREAD SIZE
(CQJX) 0.437 INCHES 1ST END
SEAT ANGLE
(CQRB) 45.0 DEGREES 1ST END
THREAD DIRECTION
(AAJF) RIGHT-HAND 1ST END
THREAD SERIES DESIGNATOR
(THSD) UNF 1ST END
VALVE DISCHARGE FLOW RATE
(ADSY) 2.0 CUBIC FEET PER MINUTE
VALVE OPERATION METHOD
(AQLR) MANUAL
STYLE DESIGNATOR
(STYL) STRAIGHT THRU
SURFACE TREATMENT
(SFTT) ANODIZE
TEST DATA DOCUMENT
(TEST) 51663-RD10280M DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING)
ADJUSTABLE PRESSURE RANGE
(CQCY) +20.5/+21.5 POUNDS PER SQUARE INCH
STYLE DESIGNATOR
(STYL) ERR-090
CONNECTION STYLE
(AHNC) G42 FLARED (TUBE) 1ST END

Manufacturer Part Numbers


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