PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

103904-1Valve,start Nozzle

Rtx Corporation Div Pratt & Whitney · NSN 4820-00-476-0402 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-476-0402 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-476-0402. Primary manufacturer part number: 103904-1.
Features
  • Valve,start Nozzle — FSC 4820
  • 4 verified cross-references
  • Primary manufacturer: Rtx Corporation Div Pratt & Whitney
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,start Nozzle, cataloged under National Stock Number 4820-00-476-0402, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Rtx Corporation Div Pratt & Whitney. This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameValve,start Nozzle
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersRtx Corporation Div Pratt & Whitney (CAGE 55820); Kaiser Fluid Technologies Inc. (CAGE 99215); Hawker Pacific Aerospace Landing Gear and Components Mfg and Repair (CAGE 99473); Tactair Fluid Controls Inc (CAGE 70236)
Technical Specifications
ParameterValue
NSN4820-00-476-0402
Primary Part Number103904-1
Item NameValve,start Nozzle
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerRtx Corporation Div Pratt & Whitney
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5950-00-230-4866 INTERCHANGEABLE
Coil,radio Frequency
5330-00-773-73182659 INTERCHANGEABLE
Gasket
Atlas Copco Holyoke Inc
5915-01-067-8364 INTERCHANGEABLE
Filter,band Pass
5315-01-250-34052659 INTERCHANGEABLE
Pin,grooved,headless
Driv-Lok Inc
Cross-Reference Index
Part NumberManufacturer
103904-1 PRIMARY Rtx Corporation Div Pratt & Whitney (USA)
2659-102 Kaiser Fluid Technologies Inc. (USA)
2659 Hawker Pacific Aerospace Landing Gear and Components Mfg and Repair (USA)
2659-102 PRIMARY Tactair Fluid Controls Inc (USA)
Related Parts
5950-00-230-4866INTERCHANGEABLE
COIL,RADIO FREQUENCY
5330-00-773-7318INTERCHANGEABLE
GASKET
2659
5915-01-067-8364INTERCHANGEABLE
FILTER,BAND PASS
5315-01-250-3405INTERCHANGEABLE
PIN,GROOVED,HEADLESS
2659

Frequently Asked Questions

What is NSN 4820-00-476-0402?

NSN 4820-00-476-0402 is a Valve,start Nozzle, manufactured by Rtx Corporation Div Pratt & Whitney, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-476-0402?

NSN 4820-00-476-0402 has 4 cross-referenced part numbers: 103904-1 (Rtx Corporation Div Pratt & Whitney), 2659-102 (Kaiser Fluid Technologies Inc.), 2659 (Hawker Pacific Aerospace Landing Gear and Components Mfg and Repair), 2659-102 (Tactair Fluid Controls Inc).

What NSN replaces 4820-00-476-0402?

There are 4 known substitutes for 4820-00-476-0402: 5950-00-230-4866, 5330-00-773-7318, 5915-01-067-8364 and 1 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com