Seat, Valve4820-01-481-7900

NSN 4820-01-481-7900 · NIIN 014817900 · Part number 8570-000-063

Velan Valve Corp. · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 57574

Government record, cited

NSN 4820-01-481-7900 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-481-7900. Manufacturer of record part number: 8570-000-063.

Also searched as 4820-01-481-7900 · 4820014817900 · NIIN 014817900 · 01-481-7900 · FSC 4820 Valves, Nonpowered · CAGE 57574 · 8570-000-063 · 73423-32 · 73423-32 ITEM NO 07

Nearby stock numbers ← 4820-01-481-7874 Valve, Flow Control · 4820-01-481-7933 Valve, Calibrated Flow →

4820-01-481-7900 — Valves, Nonpowered

Features

Seat,valve — FSC 4820
Material: STEEL CORROSION RESISTING SEAT
2 manufacturer part numbers on file
Manufacturer of record: Velan Valve Corp.

Identification

NSN: 4820-01-481-7900
NIIN: 014817900
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 8570-000-063
Manufacturer: Velan Valve Corp.

General Description

The Seat,valve, cataloged under National Stock Number 4820-01-481-7900, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Velan Valve Corp.. Government technical data includes 1 specification, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.

Technical Specifications

Parameter	Value
NSN	4820-01-481-7900
Primary Part Number	8570-000-063
Item Name	Seat,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Velan Valve Corp.
Status	ACTIVE
Material	STEEL CORROSION RESISTING SEAT

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
8570-000-063 PRIMARY	Velan Valve Corp. (USA)
73423-32 ITEM NO 07	Velan Valve Corp. (USA)

Reference documents

Reference	Meaning
73423-32	D/9 Drawing number reference only Velan Valve Corp.

Frequently Asked Questions

What is NSN 4820-01-481-7900?

NSN 4820-01-481-7900 is a Seat,valve, manufactured by Velan Valve Corp., classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-481-7900?

NSN 4820-01-481-7900 has 2 manufacturer part numbers on file: 8570-000-063 (Velan Valve Corp.), 73423-32 ITEM NO 07 (Velan Valve Corp.).

What are the specifications of 8570-000-063?

Key specifications for 8570-000-063: End Item Identification: NIMITZ CLASS CVN; Material: STEEL CORROSION RESISTING SEAT. 1 specification is documented in the U.S. Government catalog.

Is NSN 4820-01-481-7900 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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