# NSN 4820-01-523-3726: Valve, Safety Relief

NSN 4820-01-523-3726 (also written 4820015233726; NIIN 01-523-3726) is a valve, safety relief in Federal Supply Class 4820, Valves, Nonpowered. 3 manufacturer part numbers from 3 suppliers are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 4820-01-523-3726 (4820015233726)
- NIIN: 01-523-3726 (015233726)
- Item name: VALVE,SAFETY RELIEF
- 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 2026-10-27)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAJD | THREAD CLASS | 2A |
| AAJF | THREAD DIRECTION | FIRST END RIGHT-HAND |
| ADQU | FLOW CONTROL DEVICE | POPPET |
| ADSU | DISK LOADING METHOD | SPRING |
| ADZH | RENEWABLE SEAT RING TYPE | PRESSED-IN |
| AEHZ | MAXIMUM OPERATING TEMP | SINGLE RESPONSE FAHRENHEIT 210.0 |
| AEQJ | MINIMUM OPERATING TEMP | FAHRENHEIT -20.0 |
| AHNC | CONNECTION STYLE | — |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC |
| AWLS | CONNECTION TYPE | FIRST END THREADED CARTRIDGE |
| CQJX | NOMINAL THREAD SIZE | FIRST END INCHES 0.875 |
| CQQF | OPERATING PRESSURE | SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 6000.0 |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | RELIEF VALVE, DIRECT ACTING, POPPET TYPE |
| FEAT | SPECIAL FEATURES | CARTRIDGE STYLE SAFETY RELIEF VALVE, ADJUSTABLE RANGE 72 TO 6000 PSI, STANDARD SCREW ADJUSTER; MEDIA IS MINERAL OIL OR SYNTHETIC FLUID WITH LUBRICANT PROPERTIES |
| MEDA | MEDIA FOR WHICH DESIGNED | SINGLE RESPONSE OIL |
| STYL | STYLE DESIGNATOR | — |
| THSD | THREAD SERIES DESIGNATOR | FIRST END UNF |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 248154 | 60848 | ALLIED SYSTEMS COMPANY DBA ALLIED SYSTEMS CO | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| A04B2P-Z-N | 0FHH8 | STERLING HYDRAULICS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| A04B2PZN | KH207 | PARKER HANNIFIN (UK) LTD | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-01 | [SPE7MC26V4218](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820015233726) | VALVE, SAFETY RELIEF | KAMPI COMPONENTS CO INC | $795.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4820015233726&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820015233726
- 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/4820-01-523-3726/
JSON: https://nsnexplorer.com/api/nsn/4820-01-523-3726.json