PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

P80431Seat,valve

Lexair Inc · NSN 4810-00-217-2818 · FSC 4810 · No Item Name Available
Verified by PartsTable
NSN 4810-00-217-2818 — this item is cataloged by the U.S. Government under National Stock Number 4810-00-217-2818. Primary manufacturer part number: P80431.
Features
  • Seat,valve — FSC 4810
  • Flange Seat to Disk End Height: 0.125 INCHES NOMINAL IN
  • Seating Surface Shape: FLAT
  • Material: STEEL OVERALL
  • FSC Application Data: VALVE,AIR COMPRESSOR
  • Style Designator: PLAIN FLANGED
  • Body Inside Diameter: 0.313 INCHES NOMINAL IN
  • Body Outside Diameter: 0.501 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4810-00-217-2818, is classified within Federal Supply Class 4810 (No Item Name Available) of the Valves group. The primary manufacturer of record is Lexair Inc. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4810-00-217-2818
Primary Part NumberP80431
Item NameSeat,valve
FSC / FSG4810 / 48 — No Item Name Available
ManufacturerLexair Inc
StatusACTIVE
Flange Seat to Disk End Height0.125 INCHES NOMINAL IN
Seating Surface ShapeFLAT
MaterialSTEEL OVERALL
FSC Application DataVALVE,AIR COMPRESSOR
Style DesignatorPLAIN FLANGED
Body Inside Diameter0.313 INCHES NOMINAL IN
Body Outside Diameter0.501 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN
Under Flange Height0.131 INCHES NOMINAL IN
Flange Diameter0.688 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
3110-00-100-02391701314 INTERCHANGEABLE
Cone and Rollers,tapered Roller
Heil Environmental Industries
5330-00-733-0683 INTERCHANGEABLE
Gasket
Cross-Reference Index
Part NumberManufacturer
P80431 PRIMARY Lexair Inc (USA)
156/37 Wellman Group (GBR)
Related Parts
3110-00-100-0239INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
1701314
5330-00-733-0683INTERCHANGEABLE
GASKET

Frequently Asked Questions

What is NSN 4810-00-217-2818?

NSN 4810-00-217-2818 is a Seat,valve, manufactured by Lexair Inc, classified under FSC 4810 (No Item Name Available). Status: active.

What are the part numbers for NSN 4810-00-217-2818?

NSN 4810-00-217-2818 has 2 cross-referenced part numbers: P80431 (Lexair Inc), 156/37 (Wellman Group).

What NSN replaces 4810-00-217-2818?

There are 2 known substitutes for 4810-00-217-2818: 3110-00-100-0239, 5330-00-733-0683. Verify interchangeability with system specifications before substitution.

What are the specifications of P80431?

Key specifications for P80431: Flange Seat to Disk End Height: 0.125 INCHES NOMINAL IN; Seating Surface Shape: FLAT; Material: STEEL OVERALL; FSC Application Data: VALVE,AIR COMPRESSOR. 9 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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