The Valve,safety Relief, cataloged under National Stock Number 4820-01-555-4074, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Flagg Stanley G & Co Inc Dba Flagg Brass. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-555-4074 |
| Primary Part Number | 5526-150 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Flagg Stanley G & Co Inc Dba Flagg Brass |
| Status | ACTIVE |
| Material Document and Classification | MIL-F-1183 MIL SPEC SINGLE MATERIAL RESPONSE BODY |
| Material | BRONZE BODY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 17749 REV C SHT 3 PC 31 | The Electric Heater Co Dba Hubbell Electric Heater Co. (USA) |
| 5526-150 PRIMARY | Flagg Stanley G & Co Inc Dba Flagg Brass (USA) |
NSN 4820-01-555-4074 is a Valve,safety Relief, manufactured by Flagg Stanley G & Co Inc Dba Flagg Brass, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-555-4074 has 2 manufacturer part numbers on file: 17749 REV C SHT 3 PC 31 (The Electric Heater Co Dba Hubbell Electric Heater Co.), 5526-150 (Flagg Stanley G & Co Inc Dba Flagg Brass).
Key specifications for 5526-150: Material Document and Classification: MIL-F-1183 MIL SPEC SINGLE MATERIAL RESPONSE BODY; End Item Identification: NEW CONSTRUCTION LHD8; 40 GALLON ELECTRIC WATER HEATER 17749 TYPE 4; Material: BRONZE BODY. 2 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.