# NSN 4820-01-511-2642: Valve, Check

NSN 4820-01-511-2642 (also written 4820015112642; NIIN 01-511-2642) is a valve, check in Federal Supply Class 4820, Valves, Nonpowered. 4 manufacturer part numbers from 1 supplier are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 4820-01-511-2642 (4820015112642)
- NIIN: 01-511-2642 (015112642)
- 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 |
| --- | --- | --- |
| AAAR | NOMINAL PIPE SIZE ACCOMMODATED | ALL ENDS INCHES 0.3750 |
| AHNC | CONNECTION STYLE | — |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC |
| AWLS | CONNECTION TYPE | ALL ENDS UNTHREADED INTERNAL PIPE |
| CQQF | OPERATING PRESSURE | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 250.0 |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | 3/8" 81PM-1 CHECK VALVE |
| FEAT | SPECIAL FEATURES | VALVE ACTUALLY HAS THREE END CONNECTIONS. 1 INLET, 1 OUT, AND 1 ACTUATING PRESSURE END |
| MATT | MATERIAL | BODY COPPER ALLOY |
| MATT | MATERIAL | FLOW CONTROL DEVICE RUBBER SYNTHETIC |
| MATT | MATERIAL | SEAT NICKEL ALLOY |
| MATT | MATERIAL | STEM NICKEL ALLOY |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | BODY MIL SPEC SINGLE MATERIAL RESPONSE -IL-B-16541 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | FLOW CONTROL DEVICE ASSN STD SINGLE MATERIAL RESPONSE AST--D2000 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | SEAT FED SPEC SINGLE MATERIAL RESPONSE QQ-N-281 CL. B |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | STEM FED SPEC SINGLE MATERIAL RESPONSE QQ-N-281 CL. B |
| PRPY | PROPRIETARY CHARACTERISTICS | PACS |
| STYL | STYLE DESIGNATOR | — |
| ZZZK | SPECIFICATION/STANDARD DATA | GOVERNMENT SPECIFICATION 81349--IL-V-17501 -ODIFIED TYE 1 CLASS 1 & 2 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 73587 | 86184 | GRISWOLD INDUSTRIES DBA CLA-VAL CO | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 73587 ASSY 73587-01G | 86184 | GRISWOLD INDUSTRIES DBA CLA-VAL CO | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 73587-01G | 86184 | GRISWOLD INDUSTRIES DBA CLA-VAL CO | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 73587-01G-81PM1 | 86184 | GRISWOLD INDUSTRIES DBA CLA-VAL CO | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-23 | [SPE7MC26V4469](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820015112642) | VALVE, CHECK | — | $6,528.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4820015112642&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820015112642
- 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/4820-01-511-2642/
JSON: https://nsnexplorer.com/api/nsn/4820-01-511-2642.json