PartsTable TECHNICAL DATA SHEET

NSN 4820-01-425-4583Government record, cited

Valve Assembly4820-01-425-4583

NSN 4820-01-425-4583 · NIIN 014254583 · Part number 6740-7603-3

Testek Llc Dba Testek Solutions · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 06659

Government record, cited

NSN 4820-01-425-4583 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-425-4583. Manufacturer of record part number: 6740-7603-3.

Also searched as 4820-01-425-4583 · 4820014254583 · NIIN 014254583 · 01-425-4583 · FSC 4820 Valves, Nonpowered · CAGE 06659 · 6740-7603-3

Nearby stock numbers ← 4820-01-425-4570 · 4820-01-425-4588 Valve, Safety Relief →

4820-01-425-4583 — Valves, Nonpowered

Features

Valve Assembly — FSC 4820
1 manufacturer part number on file
Manufacturer of record: Testek Llc Dba Testek Solutions

Identification

NSN: 4820-01-425-4583
NIIN: 014254583
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 6740-7603-3
Manufacturer: Testek Llc Dba Testek Solutions

General Description

The Valve Assembly, cataloged under National Stock Number 4820-01-425-4583, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Testek Llc Dba Testek Solutions. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.

Catalog Facts

Item Name	Valve Assembly
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)
Manufacturers	Testek Llc Dba Testek Solutions (CAGE 06659)

Technical Specifications

Parameter	Value
NSN	4820-01-425-4583
Primary Part Number	6740-7603-3
Item Name	Valve Assembly
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Testek Llc Dba Testek Solutions
Status	ACTIVE

Lifecycle & Compliance

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

Cross-Reference Index

Part Number	Manufacturer
6740-7603-3 PRIMARY	Testek Llc Dba Testek Solutions (USA)

Reference documents

Reference	Meaning
6740-7603-3	3/9 Design control — primary reference Aai Corporation Div Mississippi Operations

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 4820-01-425-4583?

NSN 4820-01-425-4583 is a Valve Assembly, manufactured by Testek Llc Dba Testek Solutions, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-425-4583?

NSN 4820-01-425-4583 has 1 manufacturer part number on file: 6740-7603-3 (Testek Llc Dba Testek Solutions).

Is NSN 4820-01-425-4583 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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