# NSN 4820-01-109-8180: Diaphragm, Valve, Flat

NSN 4820-01-109-8180 (also written 4820011098180; NIIN 01-109-8180) is a diaphragm, valve, flat in Federal Supply Class 4820, Valves, Nonpowered. 5 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Oct 2026.

## Identification

- NSN: 4820-01-109-8180 (4820011098180)
- NIIN: 01-109-8180 (011098180)
- Item name: DIAPHRAGM,VALVE,FLAT
- 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 D: the data needed to compete the part is unavailable or cannot be obtained economically. (observed 2026-10-20)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAUB | HOLE DIAMETER | INCHES NOMINAL 0.174 |
| ABHE | OUTSIDE DIAMETER | INCHES NOMINAL 3.125 |
| ABKG | BOLT CIRCLE DIAMETER | INCHES NOMINAL 2.688 |
| ABPX | MATERIAL THICKNESS | INCHES NOMINAL 0.050 |
| ADYT | CENTER HOLE DIAMETER | INCHES NOMINAL 0.250 |
| AECS | BOLT HOLE QUANTITY | 8 |
| MATT | MATERIAL | RUBBER |
| STYL | STYLE DESIGNATOR | — |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 79204 | 86184 | GRISWOLD INDUSTRIES DBA CLA-VAL CO | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 79204-16 | 86184 | GRISWOLD INDUSTRIES DBA CLA-VAL CO | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| C1505B | 1B6W6 | BERMINGHAM CONTROLS, INC., A CALIFORNIA CORPORATION DBA BERMINGHAM CONTROLS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| C1505B | 86184 | GRISWOLD INDUSTRIES DBA CLA-VAL CO | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| MODEL CRL 1/2IN | 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 |
| --- | --- | --- | --- | --- |
| 2026-10-19 | [SPE7MX26D0044/SPE7MX27F0349](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820011098180) | DIAPHRAGM, VALVE, FLAT | GRISWOLD INDUSTRIES DBA CLA-VAL CO | $588.93 |
| 2026-08-26 | [SPE7MX26D0044/SPE7MX26F017A](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820011098180) | DIAPHRAGM, VALVE, FLA | GRISWOLD INDUSTRIES DBA CLA-VAL CO | $711.99 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4820011098180&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820011098180
- 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/4820-01-109-8180/
JSON: https://nsnexplorer.com/api/nsn/4820-01-109-8180.json