PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B3354AStem,fluid Valve

Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic · NSN 4820-01-317-4642 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-317-4642 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-317-4642. Primary manufacturer part number: B3354A.
Features
  • Stem,fluid Valve — FSC 4820
  • 2 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 Stem,fluid Valve, cataloged under National Stock Number 4820-01-317-4642, 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 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameStem,fluid Valve
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersTwin Disc, Incorporated Dba Twin Disc Mid-Atlantic (CAGE 61208)
Technical Specifications
ParameterValue
NSN4820-01-317-4642
Primary Part NumberB3354A
Item NameStem,fluid Valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTwin Disc, Incorporated Dba Twin Disc Mid-Atlantic
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4730-01-317-1698M2051Q INTERCHANGEABLE
Plug,pipe
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
4730-01-317-1714B2130 INTERCHANGEABLE
Strainer Element,sediment
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
2590-01-317-2814A2149H INTERCHANGEABLE
Filler Neck,vehicular Components
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
3020-01-317-2818XB5661 INTERCHANGEABLE
Gear,helical
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
4710-01-317-2872B3355A INTERCHANGEABLE
Tube Assembly,metal
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
4710-01-317-2873B2132 INTERCHANGEABLE
Tube Assembly,metal
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
4710-01-317-2874B1947J INTERCHANGEABLE
Tube Assembly,metal
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
2520-01-317-4665 INTERCHANGEABLE
Cover,transmission
2520-01-317-4666B2133 INTERCHANGEABLE
Cover,transmission
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
3020-01-317-7515B5651A INTERCHANGEABLE
Gear,helical
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
Cross-Reference Index
Part NumberManufacturer
B3354A PRIMARY Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
XA7022A Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
Related Parts
4730-01-317-1698INTERCHANGEABLE
PLUG,PIPE
M2051Q
4730-01-317-1714INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
B2130
2590-01-317-2814INTERCHANGEABLE
FILLER NECK,VEHICULAR COMPONENTS
A2149H
3020-01-317-2818INTERCHANGEABLE
GEAR,HELICAL
XB5661
4710-01-317-2872INTERCHANGEABLE
TUBE ASSEMBLY,METAL
B3355A
4710-01-317-2873INTERCHANGEABLE
TUBE ASSEMBLY,METAL
B2132
4710-01-317-2874INTERCHANGEABLE
TUBE ASSEMBLY,METAL
B1947J
2520-01-317-4665INTERCHANGEABLE
COVER,TRANSMISSION
2520-01-317-4666INTERCHANGEABLE
COVER,TRANSMISSION
B2133
3020-01-317-7515INTERCHANGEABLE
GEAR,HELICAL
B5651A
3040-01-317-8831INTERCHANGEABLE
SUPPORT,TRANSMISSIO
B5646
3040-01-317-8946INTERCHANGEABLE
SHAFT,STRAIGHT
XB5593A

Frequently Asked Questions

What is NSN 4820-01-317-4642?

NSN 4820-01-317-4642 is a Stem,fluid Valve, 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 4820-01-317-4642?

NSN 4820-01-317-4642 has 2 cross-referenced part numbers: B3354A (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), XA7022A (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic).

What NSN replaces 4820-01-317-4642?

There are 12 known substitutes for 4820-01-317-4642: 4730-01-317-1698, 4730-01-317-1714, 2590-01-317-2814 and 9 more. Verify interchangeability with system specifications before substitution.

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