Cartridge, Check Valve4820-01-478-8756

NSN 4820-01-478-8756 · NIIN 014788756 · Part number 230404

Allied Systems Company Dba Allied Systems Co · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 60848

Government record, cited

NSN 4820-01-478-8756 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-478-8756. Manufacturer of record part number: 230404.

Also searched as 4820-01-478-8756 · 4820014788756 · NIIN 014788756 · 01-478-8756 · FSC 4820 Valves, Nonpowered · CAGE 60848 · 230404

Nearby stock numbers ← 4820-01-478-8668 Disk and Seat Set, Valve · 4820-01-478-8760 Valve, Shuttle →

4820-01-478-8756 — Valves, Nonpowered

Features

Cartridge,check Valve — FSC 4820
1 manufacturer part number on file
Manufacturer of record: Allied Systems Company Dba Allied Systems Co

Identification

NSN: 4820-01-478-8756
NIIN: 014788756
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 230404
Manufacturer: Allied Systems Company Dba Allied Systems Co

General Description

The Cartridge,check Valve, cataloged under National Stock Number 4820-01-478-8756, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Allied Systems Company Dba Allied Systems Co. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Catalog Facts

Item Name	Cartridge,check Valve
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)
Manufacturers	Allied Systems Company Dba Allied Systems Co (CAGE 60848)

Technical Specifications

Parameter	Value
NSN	4820-01-478-8756
Primary Part Number	230404
Item Name	Cartridge,check Valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Allied Systems Company Dba Allied Systems Co
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 Items 1

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

6660-01-675-8450230404 POSSIBLE MATCH

CASE,METEOROLOGICAL EQUIPMENT

Possible match (shared part number)Vaisala Inc.

Cross-Reference Index

Part Number	Manufacturer
230404 PRIMARY	Allied Systems Company Dba Allied Systems Co (USA)

Related Parts

6660-01-675-8450POSSIBLE MATCH

CASE,METEOROLOGICAL EQUIPMENT

230404

Frequently Asked Questions

What is NSN 4820-01-478-8756?

NSN 4820-01-478-8756 is a Cartridge,check Valve, manufactured by Allied Systems Company Dba Allied Systems Co, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-478-8756?

NSN 4820-01-478-8756 has 1 manufacturer part number on file: 230404 (Allied Systems Company Dba Allied Systems Co).

What NSN replaces 4820-01-478-8756?

1 possible match (shared part number, not a government interchangeability claim): 6660-01-675-8450. Verify interchangeability with system specifications before substitution.

Is NSN 4820-01-478-8756 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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