The Cap,valve, cataloged under National Stock Number 4820-01-434-6671, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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
Cap,valve
FSC / FSG
4820 — Valves, Nonpowered (FSG 48)
Technical Specifications
Parameter
Value
NSN
4820-01-434-6671
Item Name
Cap,valve
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.
4820-01-434-6785V2D11361-4MFPOSSIBLE MATCH
DISK,VALVE
Possible match (shared part number)Vacco Industries
4820-01-434-6796V2B11580-KAPOSSIBLE MATCH
SEAT,VALVE
Possible match (shared part number)Vacco Industries
4820-01-434-6816V2C10941-3DAPOSSIBLE MATCH
CAP,VALVE
Possible match (shared part number)Vacco Industries
4820-01-434-8284V2C10937-3DAPOSSIBLE MATCH
GUIDE,SPRING,VALVE
Possible match (shared part number)Vacco Industries
4820-01-435-1534V2C10938-3DAPOSSIBLE MATCH
GUIDE,SPRING,VALVE
Possible match (shared part number)Vacco Industries
4820-01-451-0312V3D10401-KAPOSSIBLE MATCH
DISK,VALVE
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
V1D10711 ITEM 2
5/2Secondary reference
U.S. Government activity
V1D10711
D/9Drawing number reference only
U.S. Government activity
V3D10256 ITEM 2
5/2Secondary reference
U.S. Government activity
V3D10256
D/9Drawing number reference only
U.S. Government activity
V2D10419-3DA
3/2Design control — primary reference
U.S. Government activity
Related Parts
4820-01-434-6785POSSIBLE MATCH
DISK,VALVE
V2D11361-4MF
4820-01-434-6796POSSIBLE MATCH
SEAT,VALVE
V2B11580-KA
4820-01-434-6816POSSIBLE MATCH
CAP,VALVE
V2C10941-3DA
4820-01-434-8284POSSIBLE MATCH
GUIDE,SPRING,VALVE
V2C10937-3DA
4820-01-435-1534POSSIBLE MATCH
GUIDE,SPRING,VALVE
V2C10938-3DA
4820-01-451-0312POSSIBLE MATCH
DISK,VALVE
V3D10401-KA
Frequently Asked Questions
What is NSN 4820-01-434-6671?
NSN 4820-01-434-6671 is a Cap,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
What NSN replaces 4820-01-434-6671?
6 possible matches (shared part number, not a government interchangeability claim): 4820-01-434-6785, 4820-01-434-6796, 4820-01-434-6816. Verify interchangeability with system specifications before substitution.
Is NSN 4820-01-434-6671 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.