# NSN 4820-01-503-1715: Valve, Safety Relief

NSN 4820-01-503-1715 (also written 4820015031715; NIIN 01-503-1715) is a valve, safety relief in Federal Supply Class 4820, Valves, Nonpowered. 2 manufacturer part numbers from 1 supplier are on record. No purchases are on record yet.

## Identification

- NSN: 4820-01-503-1715 (4820015031715)
- NIIN: 01-503-1715 (015031715)
- 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 P: the government does not own the rights to the data needed for more sources. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| CSDC | OPENING PRESSURE SETTING | POUNDS PER SQUARE INCH 75.0 |
| STYL | STYLE DESIGNATOR | — |
| FEAT | SPECIAL FEATURES | VALVE OPENS AT 210 DEGREES F OR OR 75 PSI; UNION NUT & TAIL PIECE ARE I.A.W. MIL-F-1183 |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC OR MANUAL |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 177119-5 | 19857 | THE ELECTRIC HEATER CO DBA HUBBELL ELECTRIC HEATER CO. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| HSRV-5-75 | 19857 | THE ELECTRIC HEATER CO DBA HUBBELL ELECTRIC HEATER CO. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4820015031715&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4820015031715
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- 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/4820-01-503-1715/
JSON: https://nsnexplorer.com/api/nsn/4820-01-503-1715.json