PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

U 3380Disk,valve

Lawler Manufacturing Company, Inc. · NSN 4820-00-074-7989 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-074-7989 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-074-7989. Primary manufacturer part number: U 3380.
Features
  • Disk,valve — FSC 4820
  • Material: COPPER ALLOY
  • 4 verified cross-references
  • Primary manufacturer: Lawler Manufacturing Company, Inc.
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy construction
General Description

The Disk,valve, cataloged under National Stock Number 4820-00-074-7989, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Lawler Manufacturing Company, Inc.. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-074-7989
Primary Part NumberU 3380
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLawler Manufacturing Company, Inc.
StatusACTIVE
MaterialCOPPER ALLOY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
6110-00-468-22893380 INTERCHANGEABLE
Controller,motor
Eaton Corp Opns & Technical Center
5950-00-708-9696150A907H01REVE INTERCHANGEABLE
Transformer,radio Frequency
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
3030-00-919-90965L380 INTERCHANGEABLE
Belt,v
Contitech Usa, Inc Dba Veyance Technologies
4920-01-129-59223380 INTERCHANGEABLE
Interrupter Kit
Honeywell International Inc. Dba Honeywell Div Aerospace -Olathe Hums Div
5950-01-222-9471 INTERCHANGEABLE
Transformer,power
6625-01-421-34943380 INTERCHANGEABLE
Generator,signal
Triplett (bluffton) Corporation Dba Lfe Instruments
5365-01-423-0662AL-20-7 INTERCHANGEABLE
Shim Set
Artus Corp
5330-01-664-0351 INTERCHANGEABLE
Gasket
Cross-Reference Index
Part NumberManufacturer
U 3380 PRIMARY Lawler Manufacturing Company, Inc. (USA)
1356DPC18 Lawler Manufacturing Company, Inc. (USA)
3380 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
3380 Lawler Manufacturing Company, Inc. (USA)
Related Parts
6110-00-468-2289INTERCHANGEABLE
CONTROLLER,MOTOR
3380
5950-00-708-9696INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
150A907H01REVE
3030-00-919-9096INTERCHANGEABLE
BELT,V
5L380
4920-01-129-5922INTERCHANGEABLE
INTERRUPTER KIT
3380
5950-01-222-9471INTERCHANGEABLE
TRANSFORMER,POWER
6625-01-421-3494INTERCHANGEABLE
GENERATOR,SIGNAL
3380
5365-01-423-0662INTERCHANGEABLE
SHIM SET
AL-20-7
5330-01-664-0351INTERCHANGEABLE
GASKET

Frequently Asked Questions

What is NSN 4820-00-074-7989?

NSN 4820-00-074-7989 is a Disk,valve, manufactured by Lawler Manufacturing Company, Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-074-7989?

NSN 4820-00-074-7989 has 4 cross-referenced part numbers: U 3380 (Lawler Manufacturing Company, Inc.), 1356DPC18 (Lawler Manufacturing Company, Inc.), 3380 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 3380 (Lawler Manufacturing Company, Inc.).

What NSN replaces 4820-00-074-7989?

There are 8 known substitutes for 4820-00-074-7989: 6110-00-468-2289, 5950-00-708-9696, 3030-00-919-9096 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of U 3380?

Key specifications for U 3380: Material: COPPER ALLOY. 1 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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