Boiler System Expansion Tanks

Water Worker boiler system expansion tanks are offered in 2 and 4.4 gallon sizes, are manufactured in the USA, have the highest quality standards and offer a 5 year warranty.

Features and Benefits:

  • Easy to install
  • Compatible with all types of boiler heating systems
  • Durable, long lasting steel tank
  • Effectively controls system pressure
  • Heavy duty diaphragm for extended life
  • Air-tight air cushion - factory pre-charged to 12 psig
  • Maximum working pressure: 100 psig
  • Maximum operating temperature: 240°F


Click here for Comparison Chart

Boiler System Expansion Tanks
Model Description UPC WT L W H Qty
HTEX-15 2 Gal Tank   8 8.5 8.5 13 1
HTEX-30 4.4 Gal Tank   9 11.5 11.5 15 1


Make sure to select the tank size suited to your current heating system.
Boiler BTU Rating Minimum Tank Volume Water Worker® Model
25,000 to 75,000 2 Gallons HTEX-15
75,000 to 150,000 4.4 Gallons HTEX-30

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