The Valve,safety Relief, cataloged under National Stock Number 4820-01-482-0453, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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)
Technical Specifications
Parameter
Value
NSN
4820-01-482-0453
Item Name
Valve,safety Relief
FSC / FSG
4820 / 48 — Valves, Nonpowered
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 Items6
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5365-01-482-0485F2C10561-NNPOSSIBLE MATCH
SPACER,SLEEVE
Possible match (shared part number)Vacco Industries
4730-01-483-1633S2C10112-4MFPOSSIBLE MATCH
TAILPIECE,UNION
Possible match (shared part number)Vacco Industries
4820-01-483-1646V3D10423-01POSSIBLE MATCH
VALVE,SAFETY RELIEF
Possible match (shared part number)Vacco Industries
4730-01-483-1651S2D10627-1POSSIBLE MATCH
THREAD PIECE,UNION
Possible match (shared part number)Vacco Industries
4730-01-483-1659S2D10611-1POSSIBLE MATCH
THREAD PIECE,UNION
Possible match (shared part number)Vacco Industries
5305-01-641-9770V2D11982-10APOSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
Possible match (shared part number)Vacco Industries
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
S1E10203-06 ITEM 18
5/2Secondary reference
U.S. Government activity
S1E10203
D/9Drawing number reference only
U.S. Government activity
V3D10423-03
3/2Design control — primary reference
U.S. Government activity
Related Parts
5365-01-482-0485POSSIBLE MATCH
SPACER,SLEEVE
F2C10561-NN
4730-01-483-1633POSSIBLE MATCH
TAILPIECE,UNION
S2C10112-4MF
4820-01-483-1646POSSIBLE MATCH
VALVE,SAFETY RELIEF
V3D10423-01
4730-01-483-1651POSSIBLE MATCH
THREAD PIECE,UNION
S2D10627-1
4730-01-483-1659POSSIBLE MATCH
THREAD PIECE,UNION
S2D10611-1
5305-01-641-9770POSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
V2D11982-10A
Frequently Asked Questions
What is NSN 4820-01-482-0453?
NSN 4820-01-482-0453 is a Valve,safety Relief, classified under FSC 4820, Valves, Nonpowered. Status: active.
What NSN replaces 4820-01-482-0453?
6 possible matches (shared part number, not a government interchangeability claim): 5365-01-482-0485, 4730-01-483-1633, 4820-01-483-1646. Verify interchangeability with system specifications before substitution.
Is NSN 4820-01-482-0453 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.