# NSN 4820-01-564-3425: Valve, Check

NSN 4820-01-564-3425 (also written 4820015643425; NIIN 01-564-3425) is a valve, check in Federal Supply Class 4820, Valves, Nonpowered. 4 manufacturer part numbers from 2 suppliers are on record. The government has 1 open solicitation for it.

## Identification

- NSN: 4820-01-564-3425 (4820015643425)
- NIIN: 01-564-3425 (015643425)
- Item name: VALVE,CHECK
- 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 2026-11-08)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | VALVE .50" SPEC. |
| CCFG | VALVE SIZE | INCHES 0.500 |
| AGAV | END ITEM IDENTIFICATION | CVN NUCLEAR REACTOR BOUNDRY AREA |
| MATT | MATERIAL | BODY COPPER ALLOY |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | BODY MIL SPEC SINGLE MATERIAL RESPONSE -IL-B-16541 |
| ZZZK | SPECIFICATION/STANDARD DATA | GOVERNMENT SPECIFICATION -IL-F-1183 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| F45460PC603 | 0AT62 | SIEMENS ENERGY, INC. DBA DRESSER-RAND | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| F45460PC603 | 8FGX3 | CURTISS-WRIGHT ELECTRO-MECHANICAL CORP DBA STEAM & AIR SOLUTIONS DIV CURTISS-WRIGHT STEAM AND AIR SOLUTIONS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| R87586 | 0AT62 | SIEMENS ENERGY, INC. DBA DRESSER-RAND | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| R87586 | 8FGX3 | CURTISS-WRIGHT ELECTRO-MECHANICAL CORP DBA STEAM & AIR SOLUTIONS DIV CURTISS-WRIGHT STEAM AND AIR SOLUTIONS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Open solicitations

| Solicitation | Quantity | Closes | Link |
| --- | --- | --- | --- |
| SPE7MC-27-T-1904 | 27 | 2026-11-16 | [DIBBS](https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4820015643425&category=nsn) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4820015643425&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820015643425
- 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/4820-01-564-3425/
JSON: https://nsnexplorer.com/api/nsn/4820-01-564-3425.json