# NSN 4820-00-595-0494: Valve, Stop-Check

NSN 4820-00-595-0494 (also written 4820005950494; NIIN 00-595-0494) is a valve, stop-check in Federal Supply Class 4820, Valves, Nonpowered. 3 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 4820-00-595-0494 (4820005950494)
- NIIN: 00-595-0494 (005950494)
- Item name: VALVE,STOP-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 G: the government has a complete data package and the rights to use it. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| CWCQ | BOLT HOLE NOMINAL DIAMETER | ALL ENDS INCHES 0.562 |
| CWCF | FACE TO FACE DISTANCE | INCHES 10.000 |
| CCFG | VALVE SIZE | INCHES 3.000 |
| FEAT | SPECIAL FEATURES | VALVE SIZE 3 IN. |
| MATT | MATERIAL | BODY COPPER ALLOY |
| MATT | MATERIAL | FLOW CONTROL DEVICE NICKEL ALLOY |
| BBJX | MOUNTING POSITION | HORIZONTAL |
| ADQU | FLOW CONTROL DEVICE | DISK |
| ADSR | BONNET TYPE | OUTSIDE SCREW-YOKE |
| ADST | BONNET ATTACHMENT METHOD | BOLTED |
| ADZH | RENEWABLE SEAT RING TYPE | THREADED |
| CQQF | OPERATING PRESSURE | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 100.0 |
| CWCD | NOMINAL OUTSIDE DIAMETER | ALL ENDS INCHES 6.625 |
| CWCK | NOMINAL THICKNESS | ALL ENDS INCHES 0.500 |
| MATT | MATERIAL | STEM NICKEL ALLOY |
| AECS | BOLT HOLE QUANTITY | 8 |
| AEHZ | MAXIMUM OPERATING TEMP | SINGLE RESPONSE FAHRENHEIT 425.0 |
| AQLR | VALVE OPERATION METHOD | MANUAL |
| ARKN | FLANGE SHAPE | ALL ENDS ROUND WITH HOLES |
| AWLS | CONNECTION TYPE | ALL ENDS FLANGE |
| MEDA | MEDIA FOR WHICH DESIGNED | SINGLE RESPONSE WATER-OIL-GAS |
| STYL | STYLE DESIGNATOR | — |
| CWCT | BOLT CIRCLE NOMINAL DIAMETER | ALL ENDS INCHES 5.500 |
| CWDF | FLANGE FACE DESIGN | ALL ENDS PLAIN |
| MATT | MATERIAL | SEAT NICKEL ALLOY |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 5000S4824-1385541 | 80064 | NAVAL SHIP SYSTEMS COMMAND | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 5359-008 3IN | 76364 | MILWAUKEE VALVE CO, INC DIV MILWAUKEE VALVE COMPANY, LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 803-1385541 | 80064 | NAVAL SHIP SYSTEMS COMMAND | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-22 | [SPE7MC25P0567](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820005950494) | VALVE, STOP-CHECK | MILWAUKEE VALVE CO, INC DIV MILWAUKEE VALVE COMPANY, LLC | $56,364.72 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4820005950494&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820005950494
- 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/4820-00-595-0494/
JSON: https://nsnexplorer.com/api/nsn/4820-00-595-0494.json