# NSN 4820-01-444-2431: Valve, Vent

NSN 4820-01-444-2431 (also written 4820014442431; NIIN 01-444-2431) is a valve, vent in Federal Supply Class 4820, Valves, Nonpowered. 4 manufacturer part numbers from 4 suppliers are on record. It was last purchased in Aug 2026.

## Identification

- NSN: 4820-01-444-2431 (4820014442431)
- NIIN: 01-444-2431 (014442431)
- Item name: VALVE,VENT
- 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 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AECS | BOLT HOLE QUANTITY | 4 |
| AGAV | END ITEM IDENTIFICATION | WASP CLASS LHD |
| ARKN | FLANGE SHAPE | FIRST END ROUND WITH HOLES |
| AWLS | CONNECTION TYPE | FIRST END FLANGE |
| CCFG | VALVE SIZE | INCHES 3.000 |
| CWCD | NOMINAL OUTSIDE DIAMETER | FIRST END INCHES 7.500 |
| CWCQ | BOLT HOLE NOMINAL DIAMETER | FIRST END INCHES 0.750 |
| CWCR | SECOND CONNECTION FACE TO CENTERLINE DISTANCE | INCHES 5.500 |
| CWCT | BOLT CIRCLE NOMINAL DIAMETER | FIRST END INCHES 6.000 |
| CWDF | FLANGE FACE DESIGN | FIRST END PLAIN |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | VACUUM VENT |
| MATT | MATERIAL | FLOW CONTROL DEVICE PLASTIC POLYTETRAFLUOROETHYLENE |
| MATT | MATERIAL | BODY ALUMINUM ALLOY 356.0 |
| MEDA | MEDIA FOR WHICH DESIGNED | SINGLE RESPONSE AIR |
| STYL | STYLE DESIGNATOR | — |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 16240D3 | 00229 | AVCO EZEE FLOW DIV AVCO DISTRIBUTING CORP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 16240D3 | 0CEZ2 | THE PROTECTOSEAL COMPANY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 16240D3 | ZK672 | CEBECO PTY LTD | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| B-1509-4 | 0R229 | CECO FILTERS, INC. DBA MEFIAG FILTRATION DIV CECO FILTERS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Price history

Newest first.

| Date | Unit price | Quantity | Supplier | Agency | Source |
| --- | --- | --- | --- | --- | --- |
| 2026-08-25 | $1,917.45 | 1 | PAR DEFENSE INDUSTRIES, LLC | — | [record](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820014442431) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-08-25 | [SPE7MC26V4149](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820014442431) | VALVE, VENT | PAR DEFENSE INDUSTRIES, LLC | $1,917.45 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4820014442431&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820014442431
- 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/4820-01-444-2431/
JSON: https://nsnexplorer.com/api/nsn/4820-01-444-2431.json