Valve, Regulating, Oxygen System P4820-01-456-8399
NSN 4820-01-456-8399 · NIIN 014568399
FSC 4820 — Valves, Nonpowered · FSG 48 — Valves
Government record, cited
Also searched as4820-01-456-8399 ·
4820014568399 ·
NIIN 014568399 ·
01-456-8399 ·
FSC 4820 Valves, Nonpowered · 81-250-540 · 8-250-540
Nearby stock numbers← 4820-01-456-8117 Valve, Relief, Pressure and Temper
·
4820-01-456-8478 Parts Kit, Safety Relief Valve →
4820-01-456-8399 — Valves, Nonpowered
Features
Valve,regulating,oxygen System P — FSC 4820
Criticality Code Justification: AGAV
Cubic Measure: 0.23 CUBIC FEET
Material: COPPER ALLOY BODY
Identification
NSN: 4820-01-456-8399
NIIN: 014568399
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
General Description
The Valve,regulating,oxygen System P, cataloged under National Stock Number 4820-01-456-8399, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-456-8399
Item Name
Valve,regulating,oxygen System P
FSC / FSG
4820 / 48 — Valves, Nonpowered
Status
ACTIVE
Criticality Code Justification
AGAV
Cubic Measure
0.23 CUBIC FEET
Material
COPPER ALLOY BODY
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL B — Remove Demilitarization Key Points
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
Y
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
81-250-540
3/2Design control — primary reference
U.S. Government activity
8-250-540
3/2Design control — primary reference
U.S. Government activity
No interchangeability data on file.
Other items in FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097
4820-00-000-0097 · Item name not on file
4820-00-001-0010
VALVE,ROTARY,SELECTOR
4820-00-001-0020
4820-00-001-0020 · Item name not on file
4820-00-001-0021
4820-00-001-0021 · Item name not on file
4820-00-001-0032
4820-00-001-0032 · Item name not on file
4820-00-001-0037
VALVE,SAFETY RELIEF
4820-00-001-0042
4820-00-001-0042 · Item name not on file
4820-00-001-1230
4820-00-001-1230 · Item name not on file
Related Parts in Valves
4820-00-000-0097
4820-00-000-0097 · Item name not on file
4820-00-001-0010
VALVE,ROTARY,SELECTOR
8171E-1/4HS2
4820-00-001-0020
4820-00-001-0020 · Item name not on file
4820-00-001-0021
4820-00-001-0021 · Item name not on file
4820-00-001-0032
4820-00-001-0032 · Item name not on file
4820-00-001-0037
VALVE,SAFETY RELIEF
D559A3M2
4820-00-001-0042
4820-00-001-0042 · Item name not on file
4820-00-001-1230
4820-00-001-1230 · Item name not on file
Frequently Asked Questions
What is NSN 4820-01-456-8399?
NSN 4820-01-456-8399 is a Valve,regulating,oxygen System P, classified under FSC 4820, Valves, Nonpowered. Status: active.
What are the specifications of 4820-01-456-8399?
Key specifications for 4820-01-456-8399: Criticality Code Justification: AGAV; Cubic Measure: 0.23 CUBIC FEET; End Item Identification: OXYGEN ENRICHED AIR SYSTEM (OEAS); Material: COPPER ALLOY BODY. 3 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-456-8399 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.
What is the DEMIL code for NSN 4820-01-456-8399?
NSN 4820-01-456-8399 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.