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NSN 4820-00-816-1286, 4820008161286
VALVE,SAFETY RELIEF

Federal Supply Classification
FSC 4820 - Valves, Nonpowered
National Item Identification Number
NIIN 008161286
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 4820-00-816-1286

National Stock Number (NSN) 4820-00-816-1286, or NIIN 008161286, (valve,safety relief) was assigned January 1, 1962 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. 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 3 suppliers. Today, 3 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are deemed design controlled or valid supply parts. ISO Group has several sources of supply for this NSN.

This part number has been procured by the US Government within the last year, but shows no recent (last 90 days) procurement activity. There have been 21 contracts issued for this part number, with 25 awards given. There is moderate competition for this NSN. The US Government has awarded contracts to 9 different suppliers. The last contract numbers awarded were: SPE7MC25V4206, SPE7MC25P1756, SPE4A025P0469, SPE7MC22P2348, SPE7MC22V0487. The total value of the awarded contracts has been US$ 374,250.13.

This NSN is somewhat common among different platforms, belonging to 3 different weapons systems.

There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries. The 24 month forecast from the US Government for this part number has high volatility, with an estimated forecasted value of US$ 54,749. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jun 12, 2020, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) This part requires engineering source approval by the design control activity in order to maintain the quality of the part. An alternate source must qualify in accordance with the design control activity's procedures, as approved by the cognizant Government engineering activity. 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 4820008161286 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

CONNECTION TYPE
(AWLS) THREADED EXTERNAL TUBE ALL ENDS
CONNECTION STYLE
(AHNC) FLARED (TUBE) ALL ENDS
DISK LOADING METHOD
(ADSU) SPRING
FLOW CONTROL DEVICE
(ADQU) POPPET
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE BODY LINING
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE SEAT
MATERIAL
(MATT) ALUMINUM ALLOY 2024 OR RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICE
MATERIAL
(MATT) ALUMINUM ALLOY 2024 BODY LINING
MATERIAL
(MATT) ALUMINUM ALLOY 2024 SEAT
MAXIMUM OPERATING TEMP
(AEHZ) 300.0 FAHRENHEIT SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE
(CQGM) 140.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MEDIA FOR WHICH DESIGNED
(MEDA) AIR 1ST RESPONSE
MEDIA FOR WHICH DESIGNED
(MEDA) WATER, FRESH 2ND RESPONSE
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED
(CWFD) 0.250 INCHES 1ST END
NOMINAL THREAD SIZE
(CQJX) 0.438 INCHES ALL ENDS
OPENING PRESSURE SETTING
(CSDC) 5.0 POUNDS PER SQUARE INCH
SEAT ANGLE
(CQRB) 370.0 DEGREES ALL ENDS
STYLE DESIGNATOR
(STYL) STRAIGHT THRU
SURFACE TREATMENT
(SFTT) ANODIZE
THREAD DIRECTION
(AAJF) RIGHT-HAND ALL ENDS
THREAD CLASS
(AAJD) 3A ALL ENDS
THREAD SERIES DESIGNATOR
(THSD) UNF ALL ENDS
VALVE OPERATION METHOD
(AQLR) AUTOMATIC
STYLE DESIGNATOR
(STYL) ERR-090
MAXIMUM OPERATING TEMP
(AEHZ) 300.0 DEG FAHRENHEIT SINGLE RESPONSE
CONNECTION STYLE
(AHNC) G42 FLARED (TUBE) ALL ENDS

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