PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

L-25Heater,water,liquid Fuel

Aldrico, Inc. Dba Aldrich Company · NSN 4520-01-269-7960 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-01-269-7960 — this item is cataloged by the U.S. Government under National Stock Number 4520-01-269-7960. Primary manufacturer part number: L-25.
Features
  • Heater,water,liquid Fuel — FSC 4520
  • General Characteristics Item Description: OIL-FIRED 252000BTU/H; 1460 SQ FT PACKAGE WITH FOLLOWING EQUIPMENT PRE-WIRED,PRE-INSTALLED TANKLESS COIL,CADWELL PRIMARY CONTROL,TRIPLE AQUASTAT RELAY,LOW VOLTAGE THERMOSTAT,LIMIT CONTROL THE RALTIMETER,PRESSURE RELIEF VALVE,CIRCULATOR,TRIPLE LIMIT-CIRCULATOR RELAY,BURNER MOTOR 115V,SINGLE PHASE,60HZ 1/4HP,3450RPM,2.5 GPH FIRING RATE; MATERIAL STEEL; 47.375 IN. H,25.000 IN. DIA,39.250 IN. W; 30 PSI,1/2 NPT INLET AND OUTLET V
  • 2 verified cross-references
  • Primary manufacturer: Aldrico, Inc. Dba Aldrich Company
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Heater,water,liquid Fuel, cataloged under National Stock Number 4520-01-269-7960, is classified within Federal Supply Class 4520 (No Item Name Available) of the Plumbing, Heating, and Waste Disposal group. The primary manufacturer of record is Aldrico, Inc. Dba Aldrich Company. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, 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
NSN4520-01-269-7960
Primary Part NumberL-25
Item NameHeater,water,liquid Fuel
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerAldrico, Inc. Dba Aldrich Company
StatusACTIVE
General Characteristics Item DescriptionOIL-FIRED 252000BTU/H; 1460 SQ FT PACKAGE WITH FOLLOWING EQUIPMENT PRE-WIRED,PRE-INSTALLED TANKLESS COIL,CADWELL PRIMARY CONTROL,TRIPLE AQUASTAT RELAY,LOW VOLTAGE THERMOSTAT,LIMIT CONTROL THE RALTIMETER,PRESSURE RELIEF VALVE,CIRCULATOR,TRIPLE LIMIT-CIRCULATOR RELAY,BURNER MOTOR 115V,SINGLE PHASE,60HZ 1/4HP,3450RPM,2.5 GPH FIRING RATE; MATERIAL STEEL; 47.375 IN. H,25.000 IN. DIA,39.250 IN. W; 30 PSI,1/2 NPT INLET AND OUTLET V
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
3110-00-156-67183V-84 INTERCHANGEABLE
Bearing,ball,annular
Level 10 Industries, Inc. Div Level 10 Industries
6670-00-246-0346 INTERCHANGEABLE
Scale,weighing
5120-00-473-75637078278 INTERCHANGEABLE
Spreader Link
U S Army Tank Automotive Command Amsta-Im-Mm
5340-00-532-5868L2-5 INTERCHANGEABLE
Clamp,synchro
Roller Bearing Co of America, Inc Div Pic Design
3439-01-159-8116 INTERCHANGEABLE
Soldering Iron,electric
6515-01-432-3207L25 INTERCHANGEABLE
Protector,orthopedic Cast
Orthomed Products
5998-01-531-3364L25 INTERCHANGEABLE
Circuit Card Assembly
Canoga Perkins Corp Dba Canoga Perkins Corp
3417-01-567-9403SPIRIT S-25 INTERCHANGEABLE
Engraving System
Jorlink Usa Inc
Cross-Reference Index
Part NumberManufacturer
L-25 Aldrico, Inc. Dba Aldrich Company (USA)
L-25-WC Aldrico, Inc. Dba Aldrich Company (USA)
Related Parts
3110-00-156-6718INTERCHANGEABLE
BEARING,BALL,ANNULAR
3V-84
6670-00-246-0346INTERCHANGEABLE
SCALE,WEIGHING
5120-00-473-7563INTERCHANGEABLE
SPREADER LINK
7078278
5340-00-532-5868INTERCHANGEABLE
CLAMP,SYNCHRO
L2-5
3439-01-159-8116INTERCHANGEABLE
SOLDERING IRON,ELECTRIC
6515-01-432-3207INTERCHANGEABLE
PROTECTOR,ORTHOPEDIC CAST
L25
5998-01-531-3364INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
L25
3417-01-567-9403INTERCHANGEABLE
ENGRAVING SYSTEM
SPIRIT S-25

Frequently Asked Questions

What is NSN 4520-01-269-7960?

NSN 4520-01-269-7960 is a Heater,water,liquid Fuel, manufactured by Aldrico, Inc. Dba Aldrich Company, classified under FSC 4520 (No Item Name Available). Status: active.

What are the part numbers for NSN 4520-01-269-7960?

NSN 4520-01-269-7960 has 2 cross-referenced part numbers: L-25 (Aldrico, Inc. Dba Aldrich Company), L-25-WC (Aldrico, Inc. Dba Aldrich Company).

What NSN replaces 4520-01-269-7960?

There are 8 known substitutes for 4520-01-269-7960: 3110-00-156-6718, 6670-00-246-0346, 5120-00-473-7563 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of L-25?

Key specifications for L-25: General Characteristics Item Description: OIL-FIRED 252000BTU/H; 1460 SQ FT PACKAGE WITH FOLLOWING EQUIPMENT PRE-WIRED,PRE-INSTALLED TANKLESS COIL,CADWELL PRIMARY CONTROL,TRIPLE AQUASTAT RELAY,LOW VOLTAGE THERMOSTAT,LIMIT CONTROL THE RALTIMETER,PRESSURE RELIEF VALVE,CIRCULATOR,TRIPLE LIMIT-CIRCULATOR RELAY,BURNER MOTOR 115V,SINGLE PHASE,60HZ 1/4HP,3450RPM,2.5 GPH FIRING RATE; MATERIAL STEEL; 47.375 IN. H,25.000 IN. DIA,39.250 IN. W; 30 PSI,1/2 NPT INLET AND OUTLET V. 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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