PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

VA-1889-10 TEFLONSeat,valve

Hunt Valve Company, Inc. · NSN 4820-01-048-3345 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-048-3345 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-048-3345. Primary manufacturer part number: VA-1889-10 TEFLON.
Features
  • Seat,valve — FSC 4820
  • Body Inside Diameter: 6.000 INCHES NOMINAL IN
  • Body Outside Diameter: 6.750 INCHES NOMINAL IN
  • Material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL
  • Seating Surface Shape: RADIAL
  • Style Designator: PLAIN
  • Seat Radius: 0.188 INCHES NOMINAL IN
  • 3 verified cross-references
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 4820-01-048-3345, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Hunt Valve Company, Inc.. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, 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
NSN4820-01-048-3345
Primary Part NumberVA-1889-10 TEFLON
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerHunt Valve Company, Inc.
StatusACTIVE
Body Inside Diameter6.000 INCHES NOMINAL IN
Body Outside Diameter6.750 INCHES NOMINAL IN
MaterialPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
Seating Surface ShapeRADIAL
Style DesignatorPLAIN
Seat Radius0.188 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4820-01-340-5926VA-1889 PIECE 39 INTERCHANGEABLE
Parts Kit,ball Valve
Hunt Valve Company, Inc.
Cross-Reference Index
Part NumberManufacturer
VA-1889-10 TEFLON PRIMARY Hunt Valve Company, Inc. (USA)
VA-1889-10 TEFLON Morland Valve Co Inc Sub of Smith Valve Corp (USA)
VA-1889 Morland Valve Co Inc Sub of Smith Valve Corp (USA)
Related Parts
4820-01-340-5926INTERCHANGEABLE
PARTS KIT,BALL VALVE
VA-1889 PIECE 39

Frequently Asked Questions

What is NSN 4820-01-048-3345?

NSN 4820-01-048-3345 is a Seat,valve, manufactured by Hunt Valve Company, Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-048-3345?

NSN 4820-01-048-3345 has 3 cross-referenced part numbers: VA-1889-10 TEFLON (Hunt Valve Company, Inc.), VA-1889-10 TEFLON (Morland Valve Co Inc Sub of Smith Valve Corp), VA-1889 (Morland Valve Co Inc Sub of Smith Valve Corp).

What NSN replaces 4820-01-048-3345?

There is 1 known substitute for 4820-01-048-3345: 4820-01-340-5926. Verify interchangeability with system specifications before substitution.

What are the specifications of VA-1889-10 TEFLON?

Key specifications for VA-1889-10 TEFLON: Body Inside Diameter: 6.000 INCHES NOMINAL IN; Body Outside Diameter: 6.750 INCHES NOMINAL IN; Material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL; Seating Surface Shape: RADIAL. 7 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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