PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1-11540AHeater,fluid,industrial

Aqua-Chem, Inc. · NSN 4420-00-006-1969 · FSC 4420 · No Item Name Available
Verified by PartsTable
NSN 4420-00-006-1969 — this item is cataloged by the U.S. Government under National Stock Number 4420-00-006-1969. Primary manufacturer part number: 1-11540A.
Features
  • Heater,fluid,industrial — FSC 4420
  • 2 verified cross-references
  • Primary manufacturer: Aqua-Chem, Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Heater,fluid,industrial, cataloged under National Stock Number 4420-00-006-1969, is classified within Federal Supply Class 4420 (No Item Name Available) of the Furnace, Steam, Drying, Nuclear Reactors group. The primary manufacturer of record is Aqua-Chem, Inc.. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameHeater,fluid,industrial
FSC / FSG4420 — No Item Name Available (FSG 44)
ManufacturersAqua-Chem, Inc. (CAGE 09647)
Technical Specifications
ParameterValue
NSN4420-00-006-1969
Primary Part Number1-11540A
Item NameHeater,fluid,industrial
FSC / FSG4420 / 44 — No Item Name Available
ManufacturerAqua-Chem, Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5950-00-881-5566111540-1 INTERCHANGEABLE
Transformer,radio Frequency
Meggitt Safety Systems Inc
5950-01-020-6833 INTERCHANGEABLE
Coil,electrical
5330-01-601-253511-15401 INTERCHANGEABLE
Gasket
Northern Lights Inc
Cross-Reference Index
Part NumberManufacturer
1-11540A Aqua-Chem, Inc. (USA)
1-11540-1 Aqua-Chem, Inc. (USA)
Related Parts
5950-00-881-5566INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
111540-1
5950-01-020-6833INTERCHANGEABLE
COIL,ELECTRICAL
5330-01-601-2535INTERCHANGEABLE
GASKET
11-15401

Frequently Asked Questions

What is NSN 4420-00-006-1969?

NSN 4420-00-006-1969 is a Heater,fluid,industrial, manufactured by Aqua-Chem, Inc., classified under FSC 4420 (No Item Name Available). Status: active.

What are the part numbers for NSN 4420-00-006-1969?

NSN 4420-00-006-1969 has 2 cross-referenced part numbers: 1-11540A (Aqua-Chem, Inc.), 1-11540-1 (Aqua-Chem, Inc.).

What NSN replaces 4420-00-006-1969?

There are 3 known substitutes for 4420-00-006-1969: 5950-00-881-5566, 5950-01-020-6833, 5330-01-601-2535. Verify interchangeability with system specifications before substitution.

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