PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

KS549Valve Assembly

Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic · NSN 4820-01-350-0246 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-350-0246 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-350-0246. Primary manufacturer part number: KS549.
Features
  • Valve Assembly — FSC 4820
  • 4 verified cross-references
  • Primary manufacturer: Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve Assembly, cataloged under National Stock Number 4820-01-350-0246, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameValve Assembly
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersTwin Disc, Incorporated Dba Twin Disc Mid-Atlantic (CAGE 61208)
Technical Specifications
ParameterValue
NSN4820-01-350-0246
Primary Part NumberKS549
Item NameValve Assembly
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTwin Disc, Incorporated Dba Twin Disc Mid-Atlantic
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
2990-00-103-8245 INTERCHANGEABLE
Control Assembly,push-Pull
5950-00-465-878738449 INTERCHANGEABLE
Transformer,audio Frequency
Freed Transformer Co
Cross-Reference Index
Part NumberManufacturer
KS549 PRIMARY Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
XA7371 Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
38449 Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
XA7371M Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
Related Parts
2990-00-103-8245INTERCHANGEABLE
CONTROL ASSEMBLY,PUSH-PULL
5950-00-465-8787INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
38449

Frequently Asked Questions

What is NSN 4820-01-350-0246?

NSN 4820-01-350-0246 is a Valve Assembly, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-350-0246?

NSN 4820-01-350-0246 has 4 cross-referenced part numbers: KS549 (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), XA7371 (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), 38449 (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), XA7371M (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic).

What NSN replaces 4820-01-350-0246?

There are 2 known substitutes for 4820-01-350-0246: 2990-00-103-8245, 5950-00-465-8787. Verify interchangeability with system specifications before substitution.

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