PartsTable TECHNICAL DATA SHEET
AUGUST 2026Technical Data Sheet

H547-0001-V3D10436-3Seat,valve

Electric Boat Corporation Div General Dynamics Electric Boat · NSN 4820-01-534-6221 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-534-6221 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-534-6221. Primary manufacturer part number: H547-0001-V3D10436-3.
Features
  • Seat,valve — FSC 4820
  • 6 verified cross-references
  • Primary manufacturer: Electric Boat Corporation Div General Dynamics Electric Boat
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-534-6221, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Electric Boat Corporation Div General Dynamics Electric Boat. This item has 6 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameSeat,valve
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersElectric Boat Corporation Div General Dynamics Electric Boat (CAGE 96169); Naval Sea Systems Command (CAGE 53711); Vacco Industries (CAGE 99517)
Technical Specifications
ParameterValue
NSN4820-01-534-6221
Primary Part NumberH547-0001-V3D10436-3
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerElectric Boat Corporation Div General Dynamics Electric Boat
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4820-01-483-1923V3D10436 ITEM 3 INTERCHANGEABLE
Seat,valve
Vacco Industries
4820-01-545-3469 INTERCHANGEABLE
Seat,valve
Cross-Reference Index
Part NumberManufacturer
H547-0001-V3D10436-3 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
V3D10436-3 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
G547-0002-V3D10436-3 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
7383858-V3D10436-3 Naval Sea Systems Command (USA)
7550478-V3D10436-3 Naval Sea Systems Command (USA)
V3D10436 ITEM 3 Vacco Industries (USA)
Related Parts
4820-01-483-1923INTERCHANGEABLE
SEAT,VALVE
V3D10436 ITEM 3
4820-01-545-3469INTERCHANGEABLE
SEAT,VALVE

Frequently Asked Questions

What is NSN 4820-01-534-6221?

NSN 4820-01-534-6221 is a Seat,valve, manufactured by Electric Boat Corporation Div General Dynamics Electric Boat, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-534-6221?

NSN 4820-01-534-6221 has 6 cross-referenced part numbers: H547-0001-V3D10436-3 (Electric Boat Corporation Div General Dynamics Electric Boat), V3D10436-3 (Electric Boat Corporation Div General Dynamics Electric Boat), G547-0002-V3D10436-3 (Electric Boat Corporation Div General Dynamics Electric Boat), 7383858-V3D10436-3 (Naval Sea Systems Command), 7550478-V3D10436-3 (Naval Sea Systems Command) and 1 more.

What NSN replaces 4820-01-534-6221?

There are 2 known substitutes for 4820-01-534-6221: 4820-01-483-1923, 4820-01-545-3469. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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