# NSN 4820-01-214-7972: Valve, Safety Relief

NSN 4820-01-214-7972 (also written 4820012147972; NIIN 01-214-7972) is a valve, safety relief in Federal Supply Class 4820, Valves, Nonpowered. 3 manufacturer part numbers from 3 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 4820-01-214-7972 (4820012147972)
- NIIN: 01-214-7972 (012147972)
- 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 D: the data needed to compete the part is unavailable or cannot be obtained economically. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ADQU | FLOW CONTROL DEVICE | DISK |
| AECS | BOLT HOLE QUANTITY | 4 |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC OR MANUAL |
| ARKN | FLANGE SHAPE | ALL ENDS ROUND WITH HOLES |
| AWLS | CONNECTION TYPE | ALL ENDS FLANGE |
| CCFG | VALVE SIZE | INCHES 1.000 |
| CQCY | ADJUSTABLE PRESSURE RANGE | POUNDS PER SQUARE INCH 12.0 TO 59.0 |
| CWCD | NOMINAL OUTSIDE DIAMETER | FIRST END INCHES 6.000 |
| CWCD | NOMINAL OUTSIDE DIAMETER | SECOND END INCHES 4.250 |
| CWCK | NOMINAL THICKNESS | SECOND END INCHES 0.562 |
| CWCK | NOMINAL THICKNESS | FIRST END INCHES 0.750 |
| CWCL | FIRST CONNECTION FACE TO CENTERLINE DISTANCE | INCHES 3.469 |
| CWCQ | BOLT HOLE NOMINAL DIAMETER | SECOND END INCHES 0.562 |
| CWCQ | BOLT HOLE NOMINAL DIAMETER | FIRST END INCHES 0.750 |
| CWCR | SECOND CONNECTION FACE TO CENTERLINE DISTANCE | INCHES 3.625 |
| CWCT | BOLT CIRCLE NOMINAL DIAMETER | SECOND END INCHES 3.125 |
| CWCT | BOLT CIRCLE NOMINAL DIAMETER | FIRST END INCHES 4.750 |
| CWDF | FLANGE FACE DESIGN | ALL ENDS RAISED STRAIGHT |
| CWDH | RAISED FACE NOMINAL HEIGHT | ALL ENDS INCHES 0.062 |
| CWDL | RAISED FACE NOMINAL DIAMETER | SECOND END INCHES 1.938 |
| CWDL | RAISED FACE NOMINAL DIAMETER | FIRST END INCHES 3.062 |
| MATT | MATERIAL | SEAT STEEL COMP 304L |
| MATT | MATERIAL | FLOW CONTROL DEVICE STEEL COMP 304L |
| MATT | MATERIAL | BODY STEEL COMP 316 |
| STYL | STYLE DESIGNATOR | — |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| R10AF5J512-TL1 D50341 | 11859 | HUNT VALVE COMPANY, INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| R10AF5J512-TL1 D50341 | 34889 | HUNT VALVE COMPANY INC DBA UNION FLONETICS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| R10AF5J512-TL1 D50341VM | 03950 | NAVAL INVENTORY CONTROL POINT MECHANICSBURG | [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=4820012147972&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820012147972
- 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/4820-01-214-7972/
JSON: https://nsnexplorer.com/api/nsn/4820-01-214-7972.json