PartsTable TECHNICAL DATA SHEET

NSN 4820-01-364-4839Government record, cited

Valve, Check, Oxygen System4820-01-364-4839

NSN 4820-01-364-4839 · NIIN 013644839 · Part number 325B380-1

East/west Industries, Inc. · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 30941

Government record, cited

NSN 4820-01-364-4839 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-364-4839. Manufacturer of record part number: 325B380-1.

Also searched as 4820-01-364-4839 · 4820013644839 · NIIN 013644839 · 01-364-4839 · FSC 4820 Valves, Nonpowered · CAGE 30941 · 325B380-1 · 10124727

Nearby stock numbers ← 4820-01-364-4562 Valve Assembly, Manifold · 4820-01-364-5247 Valve, Check →

4820-01-364-4839 — Valves, Nonpowered

Features

Valve,check,oxygen System — FSC 4820
Criticality Code Justification: FEAT
1 manufacturer part number on file
Manufacturer of record: East/west Industries, Inc.

Identification

NSN: 4820-01-364-4839
NIIN: 013644839
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 325B380-1
Manufacturer: East/west Industries, Inc.

General Description

The Valve,check,oxygen System, cataloged under National Stock Number 4820-01-364-4839, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is East/west Industries, Inc.. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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	4820-01-364-4839
Primary Part Number	325B380-1
Item Name	Valve,check,oxygen System
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	East/west Industries, Inc.
Status	ACTIVE
Criticality Code Justification	FEAT

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	F

Cross-Reference Index

Part Number	Manufacturer
325B380-1 PRIMARY	East/west Industries, Inc. (USA)

Reference documents

Reference	Meaning
10124727	6/9 Informative reference only Nimikkeistokeskus Ncb Finland
325B380-1	5/9 Secondary reference Martin-Baker America, Inc

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

Frequently Asked Questions

What is NSN 4820-01-364-4839?

NSN 4820-01-364-4839 is a Valve,check,oxygen System, manufactured by East/west Industries, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-364-4839?

NSN 4820-01-364-4839 has 1 manufacturer part number on file: 325B380-1 (East/west Industries, Inc.).

What are the specifications of 325B380-1?

Key specifications for 325B380-1: Criticality Code Justification: FEAT; Special Features: MFG DESCRIBES ITEM AS VALVE ASSY,FILLER; FLIGHT SAFETY CRITICAL; End Item Identification: AIRCRAFT MODEL F-18. 1 specification is documented in the U.S. Government catalog.

Is NSN 4820-01-364-4839 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.

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