# NSN 4820-01-206-4373: Valve, Check

NSN 4820-01-206-4373 (also written 4820012064373; NIIN 01-206-4373) is a valve, check in Federal Supply Class 4820, Valves, Nonpowered. 9 manufacturer part numbers from 4 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 4820-01-206-4373 (4820012064373)
- NIIN: 01-206-4373 (012064373)
- 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 R: the government owns neither the data nor the rights, and obtaining them is judged uneconomical. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ADQU | FLOW CONTROL DEVICE | DISK |
| ADSU | DISK LOADING METHOD | WEIGHT |
| ADZH | RENEWABLE SEAT RING TYPE | THREADED |
| AECS | BOLT HOLE QUANTITY | 8 |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC |
| ARKN | FLANGE SHAPE | ALL ENDS ROUND WITH HOLES |
| AWLS | CONNECTION TYPE | ALL ENDS FLANGE |
| BBJX | MOUNTING POSITION | HORIZONTAL OR VERTICAL |
| CCFG | VALVE SIZE | INCHES 8.000 |
| CQQF | OPERATING PRESSURE | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 150.0 |
| CWCD | NOMINAL OUTSIDE DIAMETER | ALL ENDS INCHES 13.500 |
| CWCF | FACE TO FACE DISTANCE | INCHES 19.500 |
| CWCK | NOMINAL THICKNESS | ALL ENDS INCHES 1.063 |
| CWCQ | BOLT HOLE NOMINAL DIAMETER | ALL ENDS INCHES 0.875 |
| CWCT | BOLT CIRCLE NOMINAL DIAMETER | ALL ENDS INCHES 11.750 |
| CWDF | FLANGE FACE DESIGN | ALL ENDS RAISED STRAIGHT |
| CWDH | RAISED FACE NOMINAL HEIGHT | ALL ENDS INCHES 0.062 |
| CWDL | RAISED FACE NOMINAL DIAMETER | ALL ENDS INCHES 10.625 |
| FEAT | SPECIAL FEATURES | SWING-CHECK TYPE; END FLANGE DIMENSIONS CONFORM TO ANSI B16.5,FACE TO FACE DIMENSIONS CONFORM TO ANSI B16.10 |
| MATT | MATERIAL | FLOW CONTROL DEVICE STEEL UNS J92800 |
| MATT | MATERIAL | BODY STEEL UNS J92800 |
| STYL | STYLE DESIGNATOR | — |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 056744 | 48422 | WILLIAM POWELL COMPANY, THE DBA POWELL VALVE DIV THE STARFLO CORPORATION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 056744 PL 057170 | 48422 | WILLIAM POWELL COMPANY, THE DBA POWELL VALVE DIV THE STARFLO CORPORATION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 151F1LW | 79342 | WILLIAM E WILLIAMS VALVE CORP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 1561AFE-8IN | 48422 | WILLIAM POWELL COMPANY, THE DBA POWELL VALVE DIV THE STARFLO CORPORATION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 2633 DWG 056744 | 48422 | WILLIAM POWELL COMPANY, THE DBA POWELL VALVE DIV THE STARFLO CORPORATION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 31F-CB7 8IN | 61661 | NEWMANS INC NEW JERSEY DIV | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 5341F 8IN. | 63686 | THE WALWORTH COMPANY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| FIG 2633(FE) 8IN | 48422 | WILLIAM POWELL COMPANY, THE DBA POWELL VALVE DIV THE STARFLO CORPORATION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| LHD8431 | 79342 | WILLIAM E WILLIAMS VALVE CORP | [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=4820012064373&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820012064373
- 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/4820-01-206-4373/
JSON: https://nsnexplorer.com/api/nsn/4820-01-206-4373.json