PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

81518Seat,valve

Cooper Industries Inc Flow Control Div · NSN 4820-00-246-3095 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-246-3095 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-246-3095. Primary manufacturer part number: 81518.
Features
  • Seat,valve — FSC 4820
  • Body Inside Diameter: 0.880 INCHES NOMINAL IN
  • Style Designator: PLAIN
  • Seating Surface Shape: ANGULAR
  • Material Document and Classification: 21-0560,ACF INDUSTRIES INC MFR REF SINGLE MATERIAL RESPONSE OVERALL
  • Material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL
  • Body Outside Diameter: 1.110 INCHES MINIMUM AND 1.120 INCHES MAXIMUM IN
  • Seat Angle in Deg: 46.300 MINIMUM AND 46.700 MAXIMUM
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Plastic Polytetrafluoroethylene Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-246-3095, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Cooper Industries Inc Flow Control Div. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-246-3095
Primary Part Number81518
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerCooper Industries Inc Flow Control Div
StatusACTIVE
Body Inside Diameter0.880 INCHES NOMINAL IN
Style DesignatorPLAIN
Seating Surface ShapeANGULAR
Material Document and Classification21-0560,ACF INDUSTRIES INC MFR REF SINGLE MATERIAL RESPONSE OVERALL
MaterialPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
Body Outside Diameter1.110 INCHES MINIMUM AND 1.120 INCHES MAXIMUM IN
Seat Angle in Deg46.300 MINIMUM AND 46.700 MAXIMUM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3110-00-155-629686FT78 INTERCHANGEABLE
Bearing,ball,annular
Oshkosh Defense Llc
Cross-Reference Index
Part NumberManufacturer
81518 Cooper Industries Inc Flow Control Div (USA)
081518 Cooper Industries Inc Flow Control Div (USA)
Related Parts
3110-00-155-6296INTERCHANGEABLE
BEARING,BALL,ANNULAR
86FT78

Frequently Asked Questions

What is NSN 4820-00-246-3095?

NSN 4820-00-246-3095 is a Seat,valve, manufactured by Cooper Industries Inc Flow Control Div, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-246-3095?

NSN 4820-00-246-3095 has 2 cross-referenced part numbers: 81518 (Cooper Industries Inc Flow Control Div), 081518 (Cooper Industries Inc Flow Control Div).

What NSN replaces 4820-00-246-3095?

There is 1 known substitute for 4820-00-246-3095: 3110-00-155-6296. Verify interchangeability with system specifications before substitution.

What are the specifications of 81518?

Key specifications for 81518: Body Inside Diameter: 0.880 INCHES NOMINAL IN; Style Designator: PLAIN; Seating Surface Shape: ANGULAR; Material Document and Classification: 21-0560,ACF INDUSTRIES INC MFR REF SINGLE MATERIAL RESPONSE OVERALL. 8 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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