# NSN 4820-01-311-9459: Valve, Check

NSN 4820-01-311-9459 (also written 4820013119459; NIIN 01-311-9459) is a valve, check in Federal Supply Class 4820, Valves, Nonpowered. 6 manufacturer part numbers from 5 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 4820-01-311-9459 (4820013119459)
- NIIN: 01-311-9459 (013119459)
- 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 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | SECOND END RIGHT-HAND |
| AAJF | THREAD DIRECTION | FIRST END RIGHT-HAND |
| ADQU | FLOW CONTROL DEVICE | DISK |
| AEHZ | MAXIMUM OPERATING TEMP | SINGLE RESPONSE FAHRENHEIT 150.0 |
| AHNC | CONNECTION STYLE | — |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC |
| AWLS | CONNECTION TYPE | FIRST END THREADED EXTERNAL PIPE |
| AWLS | CONNECTION TYPE | SECOND END THREADED EXTERNAL TUBE |
| BBJX | MOUNTING POSITION | HORIZONTAL OR VERTICAL |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| CQJX | NOMINAL THREAD SIZE | SECOND END INCHES 0.250 |
| CQJX | NOMINAL THREAD SIZE | FIRST END INCHES 0.250 |
| CQQF | OPERATING PRESSURE | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 250.0 |
| CQRB | SEAT ANGLE | SECOND END DEGREES 37.0 |
| MATT | MATERIAL | BODY STEEL COMP 304 OR STEEL COMP 316 |
| MEDA | MEDIA FOR WHICH DESIGNED | FIRST RESPONSE AIR |
| MEDA | MEDIA FOR WHICH DESIGNED | SECOND RESPONSE WATER, FRESH |
| STYL | STYLE DESIGNATOR | — |
| THSD | THREAD SERIES DESIGNATOR | SECOND END UNIFIED NATIONAL JOINT (UNJ) |
| THSD | THREAD SERIES DESIGNATOR | FIRST END NPT |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 4578-1-000 | 14923 | ACC PARTNERS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 6310033 | 53711 | NAVAL SEA SYSTEMS COMMAND | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 6310033 | 59364 | HONEYWELL INTERNATIONAL INC. DBA HONEYWELL INTERNATIONAL | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 6310033H | 59364 | HONEYWELL INTERNATIONAL INC. DBA HONEYWELL INTERNATIONAL | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| CKFX0506050B | 92555 | THE LEE CO DBA THE LEE CO | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| K966020 ITEM 4 | 58163 | MEGGITT (NORTH HOLLYWOOD), INC. DBA MEGGITT CONTROL SYSTEMS DIV MEGGITT DEFENSE SYSTEMS, INC. | [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=4820013119459&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820013119459
- 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/4820-01-311-9459/
JSON: https://nsnexplorer.com/api/nsn/4820-01-311-9459.json