# NSN 4820-01-442-6144: Valve, Vacuum Breaking

NSN 4820-01-442-6144 (also written 4820014426144; NIIN 01-442-6144) is a valve, vacuum breaking in Federal Supply Class 4820, Valves, Nonpowered. 1 manufacturer part number from 1 supplier is on record. It was last purchased in Oct 2026.

## Identification

- NSN: 4820-01-442-6144 (4820014426144)
- NIIN: 01-442-6144 (014426144)
- Item name: VALVE,VACUUM BREAKING
- 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 2026-10-23)
- Acquisition method code: 5

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ACKM | FIRST END CONNECTION TYPE | UNTHREADED INTERNAL TUBE |
| ACKN | FIRST END STYLE DESIGNATOR | — |
| ACLH | FIRST END OUTSIDE DIAMETER TUBE ACCOMMODATED | INCHES NOMINAL 0.750 |
| ACLR | SECOND END RELATIONSHIP WITH FIRST END | IDENTICAL |
| ADQU | FLOW CONTROL DEVICE | POPPET |
| ADQZ | END CONNECTION QUANTITY | 2 |
| AGAV | END ITEM IDENTIFICATION | SHIP,OHIO CLASS SSN(TRIDENT) |
| FEAT | SPECIAL FEATURES | ANGLE STYLE |
| MATT | MATERIAL | SEAT RUBBER |
| MATT | MATERIAL | BODY COPPER ALLOY |
| MATT | MATERIAL | FLOW CONTROL DEVICE COPPER ALLOY |
| MEDA | MEDIA FOR WHICH DESIGNED | LOCATION NOT OTHERWISE SPECIFIED AIR |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| BMC3479A | 23798 | BIDORO MFG CO PO BOX 103 HUNTINGTON STA NY 11746 | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Price history

Newest first.

| Date | Unit price | Quantity | Supplier | Agency | Source |
| --- | --- | --- | --- | --- | --- |
| 2026-10-29 | $7,149.00 | 2 | PIONEER INDUSTRIES, LLC | — | [record](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820014426144) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-10-29 | [SPE7MC27V0377](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820014426144) | VALVE, VACUUM BREAKING | PIONEER INDUSTRIES, LLC | $14,298.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4820014426144&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820014426144
- 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/4820-01-442-6144/
JSON: https://nsnexplorer.com/api/nsn/4820-01-442-6144.json