# NSN 4820-01-339-7822: Valve, Safety Relief

NSN 4820-01-339-7822 (also written 4820013397822; NIIN 01-339-7822) is a valve, safety relief in Federal Supply Class 4820, Valves, Nonpowered. 1 manufacturer part number from 1 supplier is on record. No purchases are on record yet.

## Identification

- NSN: 4820-01-339-7822 (4820013397822)
- NIIN: 01-339-7822 (013397822)
- Item name: VALVE,SAFETY RELIEF
- Federal Supply Class: [FSC 4820 Valves, Nonpowered](https://nsnexplorer.com/fsc/4820/)
- Federal Supply Group: [FSG 48](https://nsnexplorer.com/group/48/)
- Acquisition method suffix code: AMSC C: needs engineering source approval; other sources must qualify first. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAJD | THREAD CLASS | 3B |
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | ALL ENDS RIGHT-HAND |
| ADQU | FLOW CONTROL DEVICE | POPPET |
| AEHZ | MAXIMUM OPERATING TEMP | SINGLE RESPONSE FAHRENHEIT 275.0 |
| AHNC | CONNECTION STYLE | — |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC |
| AWLS | CONNECTION TYPE | SECOND END THREADED INTERNAL BOSS |
| AWLS | CONNECTION TYPE | FIRST END THREADED EXTERNAL TUBE |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| CQCY | ADJUSTABLE PRESSURE RANGE | POUNDS PER SQUARE INCH 680.0 TO 1210.0 |
| CQJX | NOMINAL THREAD SIZE | ALL ENDS INCHES 0.438 |
| CQQF | OPERATING PRESSURE | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 2500.0 |
| CQRB | SEAT ANGLE | FIRST END DEGREES 37.0 |
| CSDC | OPENING PRESSURE SETTING | POUNDS PER SQUARE INCH 1150.0 |
| MATT | MATERIAL | BODY ALUMINUM ALLOY 2024 |
| MEDA | MEDIA FOR WHICH DESIGNED | FOURTH RESPONSE NITROGEN, GASEOUS |
| MEDA | MEDIA FOR WHICH DESIGNED | THIRD RESPONSE OIL, HYDRAULIC |
| MEDA | MEDIA FOR WHICH DESIGNED | FIFTH RESPONSE WATER, FRESH |
| MEDA | MEDIA FOR WHICH DESIGNED | FIRST RESPONSE AIR |
| MEDA | MEDIA FOR WHICH DESIGNED | SECOND RESPONSE HELIUM |
| STYL | STYLE DESIGNATOR | — |
| THSD | THREAD SERIES DESIGNATOR | SECOND END UNF |
| THSD | THREAD SERIES DESIGNATOR | FIRST END UNIFIED NATIONAL JOINT FINE (UNJF) |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 5159A-4TB-1150 | 91816 | CIRCOR AEROSPACE, INC. DBA CIRCOR AEROSPACE INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4820013397822&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820013397822
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- All data is public U.S. government data; every row above links to its source record where one exists.

Canonical page: https://nsnexplorer.com/nsn/4820-01-339-7822/
JSON: https://nsnexplorer.com/api/nsn/4820-01-339-7822.json