# NSN 4820-01-509-9049: Valve, Check

NSN 4820-01-509-9049 (also written 4820015099049; NIIN 01-509-9049) is a valve, check in Federal Supply Class 4820, Valves, Nonpowered. 1 manufacturer part number from 1 supplier is on record. It was last purchased in Nov 2026.

## Identification

- NSN: 4820-01-509-9049 (4820015099049)
- NIIN: 01-509-9049 (015099049)
- 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 C: needs engineering source approval; other sources must qualify first. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ADQU | FLOW CONTROL DEVICE | POPPET |
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | ALL ENDS RIGHT-HAND |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC |
| AWLS | CONNECTION TYPE | ALL ENDS THREADED EXTERNAL TUBE |
| BBJX | MOUNTING POSITION | HORIZONTAL OR VERTICAL |
| CQJX | NOMINAL THREAD SIZE | ALL ENDS INCHES 0.370 |
| CQQF | OPERATING PRESSURE | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 3000.0 |
| CQRB | SEAT ANGLE | ALL ENDS DEGREES 37.0 |
| CSDC | OPENING PRESSURE SETTING | POUNDS PER SQUARE INCH 5.0 |
| FEAT | SPECIAL FEATURES | END CONNECTIONS PER MS33656; MATERIAL 303 STAINLESS STEEL; O-RING MATERIAL, TEMPERATURE AND CRACKING PRESSURE RANGE 32 - VITON, -20 DEG FEH TO +400 DEG FEH, 0.5-1 PSIG; TUBE SIZE 3/8 INCHES; LENGTH 2.64 INCHES FACE TO FACE TO END CONNECTIONS; BODY VALVE LENGTH 1.53 INCHES; WEIGHT 0.35 LBS; MALE TUBE; PROOF PRESSURE 1-1/2 TIMES OPERATING PRESSURE; BURST PRESSURE 2-1/2 TO 4 TIMES OPERATION PRESSURE |
| MATT | MATERIAL | BODY ALUMINUM ALLOY 2024 |
| MEDA | MEDIA FOR WHICH DESIGNED | SINGLE RESPONSE FUEL/OIL, HYDROCARBON |
| STYL | STYLE DESIGNATOR | — |
| THSD | THREAD SERIES DESIGNATOR | ALL ENDS UNF |
| AEHZ | MAXIMUM OPERATING TEMP | SINGLE RESPONSE FAHRENHEIT 400.0 |
| AHNC | CONNECTION STYLE | — |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| CV02-264 | 91816 | CIRCOR AEROSPACE, INC. DBA CIRCOR AEROSPACE INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-11-02 | [SPE7MC27P0337](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820015099049) | VALVE, CHECK | TRANSAERO, INC. | $323,336.25 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4820015099049&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820015099049
- 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/4820-01-509-9049/
JSON: https://nsnexplorer.com/api/nsn/4820-01-509-9049.json