PartsTable TECHNICAL DATA SHEET

NSN 4820-01-176-8484Government record, cited

Seat, Valve4820-01-176-8484

NSN 4820-01-176-8484 · NIIN 011768484 · Part number 429B255-002

General Electric Company · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 01289

Government record, cited

NSN 4820-01-176-8484 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-176-8484. Manufacturer of record part number: 429B255-002.

Also searched as 4820-01-176-8484 · 4820011768484 · NIIN 011768484 · 01-176-8484 · FSC 4820 Valves, Nonpowered · CAGE 01289 · 429B255-002 · 429B255

Nearby stock numbers ← 4820-01-176-8483 Seat, Valve · 4820-01-176-8485 Seat, Valve →

4820-01-176-8484 — Valves, Nonpowered

Features

Seat,valve — FSC 4820
Flange Seat to Disk End Height: 5.000 INCHES NOMINAL IN
Flange Diameter: 12.000 INCHES MINIMUM AND 12.001 INCHES MAXIMUM IN
Body Outside Diameter: 9.875 INCHES NOMINAL IN
Style Designator: PLAIN FLANGED
Body Inside Diameter: 8.170 INCHES MINIMUM AND 8.180 INCHES MAXIMUM IN
Under Flange Height: 0.500 INCHES NOMINAL IN
Material: STEEL BODY

Identification

NSN: 4820-01-176-8484
NIIN: 011768484
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 429B255-002
Manufacturer: General Electric Company

General Description

The Seat,valve, cataloged under National Stock Number 4820-01-176-8484, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is General Electric Company. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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	4820-01-176-8484
Primary Part Number	429B255-002
Item Name	Seat,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	General Electric Company
Status	ACTIVE
Flange Seat to Disk End Height	5.000 INCHES NOMINAL IN
Flange Diameter	12.000 INCHES MINIMUM AND 12.001 INCHES MAXIMUM IN
Body Outside Diameter	9.875 INCHES NOMINAL IN
Style Designator	PLAIN FLANGED
Body Inside Diameter	8.170 INCHES MINIMUM AND 8.180 INCHES MAXIMUM IN
Under Flange Height	0.500 INCHES NOMINAL IN
Material	STEEL BODY

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
429B255-002 PRIMARY	General Electric Company (USA)

Reference documents

Reference	Meaning
429B255	D/9 Drawing number reference only General Electric Company

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 4820-01-176-8484?

NSN 4820-01-176-8484 is a Seat,valve, manufactured by General Electric Company, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-176-8484?

NSN 4820-01-176-8484 has 1 manufacturer part number on file: 429B255-002 (General Electric Company).

What are the specifications of 429B255-002?

Key specifications for 429B255-002: Flange Seat to Disk End Height: 5.000 INCHES NOMINAL IN; Flange Diameter: 12.000 INCHES MINIMUM AND 12.001 INCHES MAXIMUM IN; Body Outside Diameter: 9.875 INCHES NOMINAL IN; Style Designator: PLAIN FLANGED. 7 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-176-8484 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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