# NSN 4820-01-331-8674: Valve, Safety Relief

NSN 4820-01-331-8674 (also written 4820013318674; NIIN 01-331-8674) is a valve, safety relief in Federal Supply Class 4820, Valves, Nonpowered. 1 manufacturer part number from 1 supplier is on record. The government has 1 open solicitation for it.

## Identification

- NSN: 4820-01-331-8674 (4820013318674)
- NIIN: 01-331-8674 (013318674)
- 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 2026-10-20)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AECS | BOLT HOLE QUANTITY | 8 |
| 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 1.500 |
| CSDC | OPENING PRESSURE SETTING | POUNDS PER SQUARE INCH 2500.0 |
| CWCD | NOMINAL OUTSIDE DIAMETER | FIRST END INCHES 7.500 |
| CWCQ | BOLT HOLE NOMINAL DIAMETER | FIRST END INCHES 0.875 |
| CWCT | BOLT CIRCLE NOMINAL DIAMETER | FIRST END INCHES 5.875 |
| STYL | STYLE DESIGNATOR | — |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 26DA16-140/S4/SP-2500PSI | 72352 | CURTISS-WRIGHT FLOW CONTROL CORPORATION DBA FARRIS ENGINEERING DIV CURTISS-WRIGHT VALVES DIVISION- FARRIS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Open solicitations

| Solicitation | Quantity | Closes | Link |
| --- | --- | --- | --- |
| SPE7M5-27-T-1157 | 2 | 2026-10-30 | [DIBBS](https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4820013318674&category=nsn) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4820013318674&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820013318674
- 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/4820-01-331-8674/
JSON: https://nsnexplorer.com/api/nsn/4820-01-331-8674.json