PartsTable TECHNICAL DATA SHEET

NSN 4820-01-557-4863Government record, cited

Valve Assembly4820-01-557-4863

NSN 4820-01-557-4863 · NIIN 015574863 · Part number 460-190-559

Interspiro Inc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 47432

Government record, cited

NSN 4820-01-557-4863 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-557-4863. Manufacturer of record part number: 460-190-559.

Also searched as 4820-01-557-4863 · 4820015574863 · NIIN 015574863 · 01-557-4863 · FSC 4820 Valves, Nonpowered · CAGE 47432 · 460-190-559 · 460190559

Nearby stock numbers ← 4820-01-557-4845 Valve, Plug · 4820-01-557-4926 Valve, Vent →

4820-01-557-4863 — Valves, Nonpowered

Features

Valve Assembly — FSC 4820
1 manufacturer part number on file
Manufacturer of record: Interspiro Inc

Identification

NSN: 4820-01-557-4863
NIIN: 015574863
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 460-190-559
Manufacturer: Interspiro Inc

General Description

The Valve Assembly, cataloged under National Stock Number 4820-01-557-4863, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Interspiro Inc. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.

Technical Specifications

Parameter	Value
NSN	4820-01-557-4863
Primary Part Number	460-190-559
Item Name	Valve Assembly
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Interspiro Inc
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

Cross-Reference Index

Part Number	Manufacturer
460-190-559 PRIMARY	Interspiro Inc (USA)

Reference documents

Reference	Meaning
460190559	5/9 Secondary reference Rch (realisations Et Conseils Hyperbares)

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 4820-01-557-4863?

NSN 4820-01-557-4863 is a Valve Assembly, manufactured by Interspiro Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-557-4863?

NSN 4820-01-557-4863 has 1 manufacturer part number on file: 460-190-559 (Interspiro Inc).

What are the specifications of 460-190-559?

Key specifications for 460-190-559: Special Features: NON RETURN VALVE ASSEMBLY; End Item Identification: DIVING EQUIPMENT. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-557-4863 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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