# NSN 4820-01-185-4366: Valve, Regulating, Fluid Pressure

NSN 4820-01-185-4366 (also written 4820011854366; NIIN 01-185-4366) is a valve, regulating, fluid pressure in Federal Supply Class 4820, Valves, Nonpowered. 3 manufacturer part numbers from 1 supplier are on record. It was last purchased in Oct 2026.

## Identification

- NSN: 4820-01-185-4366 (4820011854366)
- NIIN: 01-185-4366 (011854366)
- Item name: VALVE,REGULATING,FLUID PRESSURE
- 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 C: needs engineering source approval; other sources must qualify first. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAHF | FIRST END FLANGE OUTSIDE DIAMETER | INCHES NOMINAL 5.000 |
| AAQL | BODY STYLE | — |
| ACKM | FIRST END CONNECTION TYPE | PLAIN FACE FLANGE |
| ACKN | FIRST END STYLE DESIGNATOR | — |
| ACKT | FIRST END FLANGE SHAPE STYLE | — |
| ACKU | FIRST END FLANGE THICKNESS | INCHES NOMINAL 0.812 |
| ACKZ | FIRST END BOLT HOLE QUANTITY | 6 |
| ACLA | FIRST END BOLT HOLE DIAMETER | INCHES NOMINAL 0.562 |
| ACLB | FIRST END BOLT CIRCLE DIAMETER | INCHES NOMINAL 3.938 |
| ACLR | SECOND END RELATIONSHIP WITH FIRST END | IDENTICAL |
| ADQL | FACE TO FACE DISTANCE | INCHES NOMINAL 6.625 |
| ADQU | FLOW CONTROL DEVICE | DISK |
| ADQZ | END CONNECTION QUANTITY | 2 |
| AEVN | REGULATION TYPE | AUTOMATIC SINGLE STAGE |
| AEVR | VALVE LOADING METHOD | SPRING |
| AEVS | REMOTE ACTUATION METHOD | DIAPHRAGM |
| MATT | MATERIAL | BODY COPPER ALLOY |
| MATT | MATERIAL | FLOW CONTROL DEVICE NICKEL ALLOY |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | FLOW CONTROL DEVICE FED SPEC SINGLE MATERIAL RESPONSE QQ-N-281 |
| MEDA | MEDIA FOR WHICH DESIGNED | LOCATION NOT OTHERWISE SPECIFIED WATER |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 00875040 | 11939 | KIDDE FIRE FIGHTING, INC. DIV NATIONAL FOAM | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 3233-9177-0 | 11939 | KIDDE FIRE FIGHTING, INC. DIV NATIONAL FOAM | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| BUL.79875020 | 11939 | KIDDE FIRE FIGHTING, INC. DIV NATIONAL FOAM | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Price history

Newest first.

| Date | Unit price | Quantity | Supplier | Agency | Source |
| --- | --- | --- | --- | --- | --- |
| 2026-10-19 | $11,902.00 | 16 | KEYSTONE FIRE PROTECTION CO DBA KEYSTONE FIRE PROTECTION CO | — | [record](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820011854366) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-10-19 | [SPE4A627P1393](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820011854366) | VALVE, REGULATING, FLUID PRESSURE | KEYSTONE FIRE PROTECTION CO DBA KEYSTONE FIRE PROTECTION CO | $190,432.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4820011854366&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820011854366
- 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/4820-01-185-4366/
JSON: https://nsnexplorer.com/api/nsn/4820-01-185-4366.json