# NSN 4820-01-056-2991: Valve, Expansion

NSN 4820-01-056-2991 (also written 4820010562991; NIIN 01-056-2991) is a valve, expansion in Federal Supply Class 4820, Valves, Nonpowered. 3 manufacturer part numbers from 1 supplier are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 4820-01-056-2991 (4820010562991)
- NIIN: 01-056-2991 (010562991)
- 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 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 |
| --- | --- | --- |
| AAQL | BODY STYLE | — |
| ABFF | FURNISHED ITEMS | VALVE PRESSURE LIMITING DEVICE |
| ACKM | FIRST END CONNECTION TYPE | UNTHREADED INTERNAL TUBE |
| ACKN | FIRST END STYLE DESIGNATOR | — |
| ACLH | FIRST END OUTSIDE DIAMETER TUBE ACCOMMODATED | INCHES NOMINAL 0.500 |
| ACLR | SECOND END RELATIONSHIP WITH FIRST END | NOT IDENTICAL |
| ADQU | FLOW CONTROL DEVICE | STEM AND INTEGRAL DISK |
| ADQZ | END CONNECTION QUANTITY | 2 |
| AXGY | MOUNTING METHOD | BULB CLAMP |
| MATT | MATERIAL | SEAT COPPER ALLOY |
| MATT | MATERIAL | FLOW CONTROL DEVICE STEEL COMP 304 |
| MATT | MATERIAL | BODY COPPER ALLOY |
| MATT | MATERIAL | STEM STEEL COMP 410 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | STEM FED STD SINGLE MATERIAL RESPONSE FED STD 66 OR ASSN STD SINGLE MATERIAL RESPONSE AISI 410 OR ASSN STD SINGLE MATERIAL RESPONSE SAE 51410 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | FLOW CONTROL DEVICE FED STD SINGLE MATERIAL RESPONSE FED STD 66 OR ASSN STD SINGLE MATERIAL RESPONSE AISI 304 OR ASSN STD SINGLE MATERIAL RESPONSE SAE 30304 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | SEAT FED SPEC SINGLE MATERIAL RESPONSE AST- B124, ALLOY NO. 2 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | BODY FED SPEC SINGLE MATERIAL RESPONSE AST- B124, ALLOY NO. 2 |
| MEDA | MEDIA FOR WHICH DESIGNED | LOCATION NOT OTHERWISE SPECIFIED REFRIGERANT 22 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| TCLE 1/2 HC | 70255 | EMERSON ELECTRIC CO ALCO CONTROLS DIV | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| TCLE1/2HW | 70255 | EMERSON ELECTRIC CO ALCO CONTROLS DIV | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| TCLE50HW | 70255 | EMERSON ELECTRIC CO ALCO CONTROLS DIV | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-17 | [SPE7MC26V4495](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820010562991) | VALVE, EXPANSION | MAKPAK, LLC DBA MAKPAK LLC | $502.52 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4820010562991&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820010562991
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- USAspending contract actions (each award above links to its record)
- 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/4820-01-056-2991/
JSON: https://nsnexplorer.com/api/nsn/4820-01-056-2991.json