# NSN 4820-01-283-6254: Valve, Safety Relief

NSN 4820-01-283-6254 (also written 4820012836254; NIIN 01-283-6254) is a valve, safety relief in Federal Supply Class 4820, Valves, Nonpowered. 2 manufacturer part numbers from 2 suppliers are on record. The government has 1 open solicitation for it.

## Identification

- NSN: 4820-01-283-6254 (4820012836254)
- NIIN: 01-283-6254 (012836254)
- 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 L: annual buy value is below the screening threshold. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AEHZ | MAXIMUM OPERATING TEMP | SINGLE RESPONSE FAHRENHEIT 160.0 |
| CQQF | OPERATING PRESSURE | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 3000.0 |
| FEAT | SPECIAL FEATURES | MATERIAL FOR SEALS: MS28775-006,O-RING |
| MATT | MATERIAL | OVERALL ALUMINUM ALLOY 2024 AND ALUMINUM ALLOY 6061 |
| MEDA | MEDIA FOR WHICH DESIGNED | SECOND RESPONSE NITROGEN, GASEOUS |
| MEDA | MEDIA FOR WHICH DESIGNED | FIRST RESPONSE AIR |
| STYL | STYLE DESIGNATOR | — |
| SUPP | SUPPLEMENTARY FEATURES | APPL TO ACFT,TYPE C-5B |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 23942172 | 99221 | TAVCO, INC. DIV WILLIAMS AEROSPACE & MANUFACTURING INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 40003837 | 45402 | MEGGITT SAFETY SYSTEMS, INC. DBA MEGGITT CONTROL SYSTEMS-VENTURA COUNTY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Open solicitations

| Solicitation | Quantity | Closes | Link |
| --- | --- | --- | --- |
| SPE7MC-27-T-0432 | 7 | 2026-10-23 | [DIBBS](https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4820012836254&category=nsn) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4820012836254&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820012836254
- 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/4820-01-283-6254/
JSON: https://nsnexplorer.com/api/nsn/4820-01-283-6254.json