NSN 4820-01-441-8378 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-441-8378. Manufacturer of record part number: WSC023.
Manufacturer of record: Air Liquide Advanced Technologies
Identification
NSN: 4820-01-441-8378
NIIN: 014418378
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: WSC023
Manufacturer: Air Liquide Advanced Technologies
General Description
The Valve,check, cataloged under National Stock Number 4820-01-441-8378, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Air Liquide Advanced Technologies. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Catalog Facts
Item Name
Valve,check
FSC / FSG
4820 — Valves, Nonpowered (FSG 48)
Manufacturers
Air Liquide Advanced Technologies (CAGE F0037); Les Automatismes Appliques (CAGE F9654)
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 4820-01-441-8378?
NSN 4820-01-441-8378 is a Valve,check, manufactured by Air Liquide Advanced Technologies, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-441-8378?
NSN 4820-01-441-8378 has 2 manufacturer part numbers on file: WSC023 (Air Liquide Advanced Technologies), 224A3PP015 (Les Automatismes Appliques).
Is NSN 4820-01-441-8378 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.