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NSN 4820-00-632-1521, 4820006321521
Cancelled -> Replaced by 4820009696627

Federal Supply Classification
FSC 4820 - Valves, Nonpowered
National Item Identification Number
NIIN 006321521
Codification Country
United States
Item Name Code
INC 16996
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 4820-00-632-1521

National Stock Number (NSN) 4820-00-632-1521, or NIIN 006321521, (valve,relief,pressure and temper) was assigned January 1, 1961 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 3 stock numbers: 4820009696627, 4820008982554, 4820005419289.

There are 8 manufacturer part numbers associated with this NSN. 4 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 3 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, with the most recent procurement date of Jul 09, 2018. There have been 2 contracts issued for this part number, with 2 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 2 different suppliers. The last contract numbers awarded were: SPE7MC18P5275, SPE7M915V0457. The total value of the awarded contracts has been US$ 1,689.10.

This NSN is somewhat common among different platforms, belonging to 4 different weapons systems.

There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Oct 08, 2020, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The annual buy value of this part falls below the screening threshold of $10,000 but it has been screened for known source(s). (NOTE: This code shall not be used when screening parts entering the inventory. It shall not be assigned in preference to or supersede any other AMSC.) Valid AMCs: 1, 2, 3, 4 and 5.

This NSN is assigned to Item Name Code (INC) 16996. [A VALVE DESIGNED TO RELEASE UNDER EXCESSIVE PRESSURE AND/OR EXCESSIVE TEMPERATURE BY OPENING AT A PREDETERMINED PRESSURE AND/OR TEMPERATURE. THERMOSTATICALLY OPERATED VALVES CLOSE WHEN THE PRESSURE IS RELIEVED OR THE TEMPERATURE IS REDUCED. FUSIBLE PLUG VALVES REQUIRE REPLACEMENT OF THE PLUG. SEE ALSO VALVE, SAFETY RELIEF AND VALVE, REGULATING. 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 4820006321521 contains an unknown precious metal.

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

END CONNECTION QUANTITY
(ADQZ) 2
BODY STYLE
(AAQL) ANGLE GIVE "ADQM" AND "ADQN" ONLY IF FLANGED ONE OR TWO ENDS
FURNISHED ITEMS
(ABFF) EMERGENCY OPENING DEVICE
FIRST END CONNECTION TYPE
(ACKM) THREADED INTERNAL PIPE
FIRST END STYLE DESIGNATOR
(ACKN) PLAIN
FIRST END NOMINAL PIPE SIZE ACCOMMODATED
(ACLG) 0.750 INCHES
FIRST END THREAD DIRECTION
(ACLL) RIGHT-HAND
FLOW CONTROL DEVICE
(ADQU) POPPET
MATERIAL
(MATT) COPPER ALLOY BODY
MATERIAL
(MATT) COPPER ALLOY SEAT
MATERIAL
(MATT) COPPER ALLOY STEM
MATERIAL
(MATT) PLASTIC SILICONE FLOW CONTROL DEVICE
MEDIA FOR WHICH DESIGNED
(ACKL) WATER, FRESH
OPENING PRESSURE SETTING
(ADSV) 125.0 POUNDS PER SQUARE INCH
SPECIAL FEATURES
(FEAT) 355.000 BTU PER HR MIN DISCHARGE
SECOND END CONNECTION TYPE
(ACLS) THREADED EXTERNAL PIPE
SECOND END NOMINAL PIPE SIZE ACCOMMODATED
(ACMN) 0.750 INCHES
SECOND END RELATIONSHIP WITH FIRST END
(ACLR) NOT IDENTICAL
SECOND END STYLE DESIGNATOR
(ACLT) PLAIN
SECOND END THREAD DIRECTION
(ACMS) RIGHT-HAND
TEMP ADJUSTABILITY
(AEVX) NOT ADJUSTABLE
TEMP CONTROL DEVICE TYPE
(AZFX) THERMOSTATIC
TEMP RATING
(ABJH) 210.0 FAHRENHEIT
SEAT MATERIAL
(ACSH) BRONZE
BODY MATERIAL
(AAFZ) BRONZE
STEM MATERIAL
(ABEP) BRONZE
FLOW CONTROL DEVICE MATERIAL
(ADQV) SILICONE
TEMP RATING
(ABJH) 210.0 DEG FAHRENHEIT
OUTSIDE SURFACE TREATMENT
(AAJP) ANY ACCEPTABLE
TEMP CONTROL DEVICE TYPE
(AFKX) THERMOSTATIC
OUTSIDE SURFACE TREATMENT
(AAJP) ANY ACCEPTABLEANY ACCEPTABLE
MATERIAL
(MATT) UNABLE TO DECODE

Manufacturer Part Numbers

1830209

RNCC
5
RNVC
9
1840227

RNCC
5
RNVC
9
401X

RNCC
5
RNVC
9
40L

RNCC
3
RNVC
2
40L34

RNCC
C
RNVC
1
ANSIZ2122

RNCC
5
RNVC
1
MILV13612

RNCC
5
RNVC
9
18C40227

RNCC
3
RNVC
2

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