# NSN 4820-00-984-2478: Valve, Check

NSN 4820-00-984-2478 (also written 4820009842478; NIIN 00-984-2478) is a valve, check in Federal Supply Class 4820, Valves, Nonpowered. 3 manufacturer part numbers from 3 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 4820-00-984-2478 (4820009842478)
- NIIN: 00-984-2478 (009842478)
- 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 L: annual buy value is below the screening threshold. (observed 2026-11-01)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | ALL ENDS RIGHT-HAND |
| AWLS | CONNECTION TYPE | ALL ENDS THREADED EXTERNAL TUBE |
| BBJX | MOUNTING POSITION | HORIZONTAL |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| CQJX | NOMINAL THREAD SIZE | ALL ENDS INCHES 0.438 |
| CQQF | OPERATING PRESSURE | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 3000.0 |
| CQRB | SEAT ANGLE | ALL ENDS DEGREES 37.0 |
| MEDA | MEDIA FOR WHICH DESIGNED | SINGLE RESPONSE FUEL/OIL, HYDROCARBON |
| STYL | STYLE DESIGNATOR | — |
| ADQU | FLOW CONTROL DEVICE | POPPET |
| ADSU | DISK LOADING METHOD | SPRING |
| AEHZ | MAXIMUM OPERATING TEMP | FIRST RESPONSE FAHRENHEIT -65.0 |
| AEHZ | MAXIMUM OPERATING TEMP | SECOND RESPONSE FAHRENHEIT 200.0 |
| AHNC | CONNECTION STYLE | — |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC |
| CWFD | NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | ALL ENDS INCHES 0.250 |
| FEAT | SPECIAL FEATURES | 2PSI OPENING PRESSURE |
| MATT | MATERIAL | OVERALL STEEL CORROSION RESISTING |
| THSD | THREAD SERIES DESIGNATOR | ALL ENDS UNF |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 488-4SS2-2 | 09990 | PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS DIV HYDRAULIC VALVE DIVISION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 488-4SS2-2 | 86768 | TELEDYNE INDUSTRIES INC TELEDYNE FLUID SYSTEMS REPUBLIC BUSINESS UNIT | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 488-4SS2-2 | 94590 | REPUBLIC SUPPLY CO OF CALIFORNIA THE | [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=4820009842478&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820009842478
- 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/4820-00-984-2478/
JSON: https://nsnexplorer.com/api/nsn/4820-00-984-2478.json