# NSN 4820-00-256-6684: Valve, Expansion

NSN 4820-00-256-6684 (also written 4820002566684; NIIN 00-256-6684) is a valve, expansion in Federal Supply Class 4820, Valves, Nonpowered. 6 manufacturer part numbers from 4 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 4820-00-256-6684 (4820002566684)
- NIIN: 00-256-6684 (002566684)
- Item name: VALVE,EXPANSION
- 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 R: the government owns neither the data nor the rights, and obtaining them is judged uneconomical. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAQL | BODY STYLE | — |
| AXGY | MOUNTING METHOD | BULB CLAMP |
| ACLR | SECOND END RELATIONSHIP WITH FIRST END | NOT IDENTICAL |
| ACLS | SECOND END CONNECTION TYPE | UNTHREADED INTERNAL TUBE |
| ABJH | TEMP RATING | FAHRENHEIT -50.0 AND FAHRENHEIT 50.0 |
| AFKL | VALVE EVAPORATOR TEMP RANGE DESIGNATION | LOW |
| AGUB | REFRIGERATION CAPACITY IN BTU PER HOUR | 15.6 |
| ACKM | FIRST END CONNECTION TYPE | UNTHREADED INTERNAL TUBE |
| ACKN | FIRST END STYLE DESIGNATOR | — |
| MATT | MATERIAL | SEAT COPPER ALLOY |
| ACLT | SECOND END STYLE DESIGNATOR | — |
| MEDA | MEDIA FOR WHICH DESIGNED | LOCATION NOT OTHERWISE SPECIFIED REFRIGERANT 12 |
| MATT | MATERIAL | BODY COPPER ALLOY |
| MATT | MATERIAL | FLOW CONTROL DEVICE STEEL |
| FEAT | SPECIAL FEATURES | FURN W/BULB CLAMPS AND INSTRUCTION SHEET; SAFE WORKING PRESSURE 450.0 PSIG |
| ACLH | FIRST END OUTSIDE DIAMETER TUBE ACCOMMODATED | INCHES NOMINAL 0.500 |
| ACMP | SECOND END OUTSIDE DIAMETER TUBE ACCOMMODATED | INCHES NOMINAL 0.625 |
| ADQU | FLOW CONTROL DEVICE | DISK, TOP GUIDED |
| ADQZ | END CONNECTION QUANTITY | 2 |
| AEVT | CAPILLARY TUBE LENGTH | INCHES NOMINAL 240.000 |
| AEVU | BULB LENGTH | INCHES NOMINAL 4.812 |
| AEVV | BULB DIAMETER | INCHES NOMINAL 0.625 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 4820PL0990985 | 9009H | JEDNOLITY INDEKS MATERIALOWY - UNIFORM MATERIAL INDEX | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| F23046 | 70255 | EMERSON ELECTRIC CO ALCO CONTROLS DIV | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| TCLN200FA4F | 70255 | EMERSON ELECTRIC CO ALCO CONTROLS DIV | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| TCLN2FW | 2B475 | PROGRESS SUPPLY, INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| TCLN2FW | 5K089 | WILLIAMS AND CO INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| TCLN2FW | 70255 | EMERSON ELECTRIC CO ALCO CONTROLS DIV | [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=4820002566684&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820002566684
- 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/4820-00-256-6684/
JSON: https://nsnexplorer.com/api/nsn/4820-00-256-6684.json