NSN 4820-01-407-4579 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-407-4579. Manufacturer of record part number: SW125B01R0090.
Manufacturer of record: Anderson Greenwood Lp Dba Anderson Greenwood Crosby
Identification
NSN: 4820-01-407-4579
NIIN: 014074579
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: SW125B01R0090
Manufacturer: Anderson Greenwood Lp Dba Anderson Greenwood Crosby
General Description
The Valve,safety Relief, cataloged under National Stock Number 4820-01-407-4579, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Anderson Greenwood Lp Dba Anderson Greenwood Crosby. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Catalog Facts
Item Name
Valve,safety Relief
FSC / FSG
4820 — Valves, Nonpowered (FSG 48)
Manufacturers
Anderson Greenwood Lp Dba Anderson Greenwood Crosby (CAGE 01343); Naval Sea Systems Command (CAGE 53711)
Technical Specifications
Parameter
Value
NSN
4820-01-407-4579
Primary Part Number
SW125B01R0090
Item Name
Valve,safety Relief
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items3
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4820-01-478-0818SW125B01R0105/CDS17037POSSIBLE MATCH
VALVE,SAFETY RELIEF
Possible match (shared part number)Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-533-4345SW12504R0085POSSIBLE MATCH
VALVE,SAFETY RELIEF
Possible match (shared part number)Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-685-8470SW12504R0085/CDS17037POSSIBLE MATCH
VALVE,RELIEF,PRESSURE AND TEMPER
Possible match (shared part number)Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
Related Parts
4820-01-478-0818POSSIBLE MATCH
VALVE,SAFETY RELIEF
SW125B01R0105/CDS17037
4820-01-533-4345POSSIBLE MATCH
VALVE,SAFETY RELIEF
SW12504R0085
4820-01-685-8470POSSIBLE MATCH
VALVE,RELIEF,PRESSURE AND TEMPER
SW12504R0085/CDS17037
Frequently Asked Questions
What is NSN 4820-01-407-4579?
NSN 4820-01-407-4579 is a Valve,safety Relief, manufactured by Anderson Greenwood Lp Dba Anderson Greenwood Crosby, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-407-4579?
NSN 4820-01-407-4579 has 2 manufacturer part numbers on file: SW125B01R0090 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 211033213 (Naval Sea Systems Command).
What NSN replaces 4820-01-407-4579?
3 possible matches (shared part number, not a government interchangeability claim): 4820-01-478-0818, 4820-01-533-4345, 4820-01-685-8470. Verify interchangeability with system specifications before substitution.
Is NSN 4820-01-407-4579 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.