PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

81VP20SHeater,water,electric

Rheem Mfg Co · NSN 4520-00-151-6753 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-00-151-6753 — this item is cataloged by the U.S. Government under National Stock Number 4520-00-151-6753. Primary manufacturer part number: 81VP20S.
Features
  • Heater,water,electric — FSC 4520
  • Overall Diameter: 18.250 INCHES NOMINAL IN
  • Switch Type: SINGLE THROW
  • Insulated Feature: INCLUDED
  • Heating Element Type: SINGLE
  • Thermostatic Switch: INCLUDED
  • Material: STEEL
  • Capacity: 20.0 GALLONS TANK
Applications
  • Applications requiring Steel construction
General Description

The Heater,water,electric, cataloged under National Stock Number 4520-00-151-6753, 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 Rheem Mfg Co. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4520-00-151-6753
Primary Part Number81VP20S
Item NameHeater,water,electric
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerRheem Mfg Co
StatusCANCELLED
Overall Diameter18.250 INCHES NOMINAL IN
Switch TypeSINGLE THROW
Insulated FeatureINCLUDED
Heating Element TypeSINGLE
Thermostatic SwitchINCLUDED
MaterialSTEEL
Capacity20.0 GALLONS TANK
Nondefinitive Spec/std DataA GROUP AND 1 SERIES AND 4 TYPE AND 20 SIZE AND RD MODEL
Surface TreatmentGLASS FIBER INSIDE
Heating Element Wattage Rating200.000 SINGLE
Heating Capacity Per Hour8.2 GALLONS
Operating Pressure150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6750-00-008-3326 INTERCHANGEABLE
Paper,copying,diazo Process
4520-00-033-4283 INTERCHANGEABLE
Heater,water,electric
4520-00-033-4284 INTERCHANGEABLE
Heater,water,electric
4520-00-033-4286 INTERCHANGEABLE
Heater,water,electric
4520-00-033-4287 INTERCHANGEABLE
Heater,water,electric
4520-00-101-39653570K33 INTERCHANGEABLE
Heater,water,electric
Mcmaster-Carr Supply Co
4520-00-101-3967 INTERCHANGEABLE
Heater,water,electric
4520-00-143-9399 INTERCHANGEABLE
Heater,water,electric
4520-00-143-9400 INTERCHANGEABLE
Heater,water,electric
4520-00-143-9548 INTERCHANGEABLE
Heater,water,gas
Cross-Reference Index
Part NumberManufacturer
81VP20S Rheem Mfg Co Water Heater Div (USA)
20SE Rheem Mfg Co Container Div (USA)
W-H-196J Federal Specifications Promulgated by General Services Administration Washington DC (USA)
W-H-196 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
81VP20S PRIMARY Rheem Mfg Co (USA)
PR0E20-1-RH-POU Rheem Mfg Co (USA)
Related Parts
6750-00-008-3326INTERCHANGEABLE
PAPER,COPYING,DIAZO PROCESS
4520-00-033-4283INTERCHANGEABLE
HEATER,WATER,ELECTRIC
4520-00-033-4284INTERCHANGEABLE
HEATER,WATER,ELECTRIC
4520-00-033-4286INTERCHANGEABLE
HEATER,WATER,ELECTRIC
4520-00-033-4287INTERCHANGEABLE
HEATER,WATER,ELECTRIC
4520-00-101-3965INTERCHANGEABLE
HEATER,WATER,ELECTRIC
3570K33
4520-00-101-3967INTERCHANGEABLE
HEATER,WATER,ELECTRIC
4520-00-143-9399INTERCHANGEABLE
HEATER,WATER,ELECTRIC
4520-00-143-9400INTERCHANGEABLE
HEATER,WATER,ELECTRIC
4520-00-143-9548INTERCHANGEABLE
HEATER,WATER,GAS
6750-00-172-9109INTERCHANGEABLE
PAPER,COPYING,DIAZO PROCESS
241-BSF
4520-00-585-2986INTERCHANGEABLE
HEATER,WATER,GAS

Frequently Asked Questions

What is NSN 4520-00-151-6753?

NSN 4520-00-151-6753 is a Heater,water,electric, manufactured by Rheem Mfg Co, classified under FSC 4520 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4520-00-151-6753?

NSN 4520-00-151-6753 has 6 cross-referenced part numbers: 81VP20S (Rheem Mfg Co Water Heater Div), 20SE (Rheem Mfg Co Container Div), W-H-196J (Federal Specifications Promulgated by General Services Administration Washington DC), W-H-196 (Federal Specifications Promulgated by General Services Administration Washington DC), 81VP20S (Rheem Mfg Co) and 1 more.

What NSN replaces 4520-00-151-6753?

There are 12 known substitutes for 4520-00-151-6753: 6750-00-008-3326, 4520-00-033-4283, 4520-00-033-4284 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 81VP20S?

Key specifications for 81VP20S: Overall Diameter: 18.250 INCHES NOMINAL IN; Switch Type: SINGLE THROW; Overall Height: 24.750 INCHES NOMINAL IN; Insulated Feature: INCLUDED. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4520-00-151-6753 still in active supply?

NSN 4520-00-151-6753 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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