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NSN 4820-01-237-2804, 4820012372804
VALVE,SAFETY RELIEF

Federal Supply Classification
FSC 4820 - Valves, Nonpowered
National Item Identification Number
NIIN 012372804
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 4820-01-237-2804

National Stock Number (NSN) 4820-01-237-2804, or NIIN 012372804, (valve,safety relief) was assigned July 29, 1986 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. 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 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 Dec 10, 2014, 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 needed to produce this item from additional sources is not physically available. Valid AMCs: 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 4820012372804 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

CONNECTION STYLE
(AHNC) SOCKET (TUBE) ERR-100
ADJUSTABLE PRESSURE RANGE
(CQCY) +48.0 TO 59.0 POUNDS PER SQUARE INCH
BOLT HOLE NOMINAL DIAMETER
(CWCQ) 0.562 INCHES 1ST END
BOLT HOLE QUANTITY
(AECS) 6 1ST END
BONNET ATTACHMENT METHOD
(ADST) BOLTED
BONNET TYPE
(ADSR) INSIDE SCREW
BOLT CIRCLE NOMINAL DIAMETER
(CWCT) 4.438 INCHES 1ST END
CONNECTION STYLE
(AHNC) SOCKET (TUBE) 2ND END
CONNECTION TYPE
(AWLS) FLANGE 1ST END
CONNECTION TYPE
(AWLS) UNTHREADED INTERNAL TUBE 2ND END
FURNISHED ITEMS AND QUANTITY
(TMQY) 1 LEVER
FLANGE FACE DESIGN
(CWDF) PLAIN 1ST END
FLANGE SHAPE
(ARKN) ROUND WITH HOLES 1ST END
FLOW CONTROL DEVICE
(ADQU) DISK
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE BODY
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE SEAT
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE STEM
MATERIAL
(MATT) COPPER ALLOY BODY
MATERIAL
(MATT) NICKEL ALLOY FLOW CONTROL DEVICE
MATERIAL
(MATT) NICKEL ALLOY SEAT
MATERIAL
(MATT) STEEL CORROSION RESISTING STEM
MAXIMUM OPERATING PRESSURE
(CQGM) 150.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP
(AEHZ) 250.0 FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNED
(MEDA) WATER-OIL-GAS SINGLE RESPONSE
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED
(CWFD) 2.000 INCHES 2ND END
NOMINAL OUTSIDE DIAMETER
(CWCD) 2.375 INCHES 1ST END
NOMINAL THICKNESS
(CWCK) 0.438 INCHES 1ST END
VALVE OPERATION METHOD
(AQLR) AUTOMATIC
STYLE DESIGNATOR
(STYL) ANGLE
STYLE DESIGNATOR
(STYL) ERR-090
MAXIMUM OPERATING TEMP
(AEHZ) 250.0 DEG FAHRENHEIT SINGLE RESPONSE
ADJUSTABLE PRESSURE RANGE
(CQCY) +48.0/+59.0 POUNDS PER SQUARE INCH

Manufacturer Part Numbers


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