PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

18806Seat,valve

Schneider Electric Systems Usa Inc · NSN 4820-00-799-1441 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-799-1441 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-799-1441. Primary manufacturer part number: 18806.
Features
  • Seat,valve — FSC 4820
  • Flange Diameter: 3.434 INCHES NOMINAL IN
  • Body Inside Diameter: 2.484 INCHES NOMINAL IN
  • Under Flange Height: 0.380 INCHES NOMINAL IN
  • Thread Quantity Per Inch: 14 SINGLE THREADED PORTION
  • Nominal Thread Size: 3.000 INCHES SINGLE THREADED PORTION IN
  • Style Designator: THREADED FLANGED
  • Thread Series Designator: UNS SINGLE THREADED PORTION
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-799-1441, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Schneider Electric Systems Usa Inc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-799-1441
Primary Part Number18806
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerSchneider Electric Systems Usa Inc
StatusACTIVE
Flange Diameter3.434 INCHES NOMINAL IN
Body Inside Diameter2.484 INCHES NOMINAL IN
Under Flange Height0.380 INCHES NOMINAL IN
Thread Quantity Per Inch14 SINGLE THREADED PORTION
Nominal Thread Size3.000 INCHES SINGLE THREADED PORTION IN
Style DesignatorTHREADED FLANGED
Thread Series DesignatorUNS SINGLE THREADED PORTION
MaterialSTEEL CORROSION RESISTING OVERALL
Seating Surface ShapeFLAT
Flange Seat to Disk End Height0.323 INCHES NOMINAL IN
Thread Class2A SINGLE THREADED PORTION A
Thread Length0.300 INCHES NOMINAL SINGLE THREADED PORTION IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5120-00-293-1289 INTERCHANGEABLE
Wrench,socket
5950-01-058-133138515-3 INTERCHANGEABLE
Reactor
Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp
9905-01-059-372218806 INTERCHANGEABLE
Plate,designation
Jenny Products, Inc
6220-01-507-2467 INTERCHANGEABLE
Lens,light
Cross-Reference Index
Part NumberManufacturer
18806 PRIMARY Schneider Electric Systems Usa Inc (USA)
Related Parts
5120-00-293-1289INTERCHANGEABLE
WRENCH,SOCKET
5950-01-058-1331INTERCHANGEABLE
REACTOR
38515-3
9905-01-059-3722INTERCHANGEABLE
PLATE,DESIGNATION
18806
6220-01-507-2467INTERCHANGEABLE
LENS,LIGHT

Frequently Asked Questions

What is NSN 4820-00-799-1441?

NSN 4820-00-799-1441 is a Seat,valve, manufactured by Schneider Electric Systems Usa Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-799-1441?

NSN 4820-00-799-1441 has 1 cross-referenced part number: 18806 (Schneider Electric Systems Usa Inc).

What NSN replaces 4820-00-799-1441?

There are 4 known substitutes for 4820-00-799-1441: 5120-00-293-1289, 5950-01-058-1331, 9905-01-059-3722 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 18806?

Key specifications for 18806: Flange Diameter: 3.434 INCHES NOMINAL IN; Body Inside Diameter: 2.484 INCHES NOMINAL IN; Under Flange Height: 0.380 INCHES NOMINAL IN; Thread Quantity Per Inch: 14 SINGLE THREADED PORTION. 12 total characteristics are documented in the Federal Logistics Information System.

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