Supply Giant 2 Gallon Capacity Mini Thermal Expansion Tank for Tankless or Point-of-Use Water Heaters, 304 Stainless

Supply Giant 2 Gallon Capacity Mini Thermal Expansion Tank for Tankless or Point-of-Use Water Heaters, 304 Stainless

$44.99
$44.99 $69.99
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Supply Giant 2 Gallon Capacity Mini Thermal Expansion Tank for Tankless or Point-of-Use Water Heaters, 304 Stainless
  • Supply Giant 2 Gallon Capacity Mini Thermal Expansion Tank for Tankless or Point-of-Use Water Heaters, 304 Stainless
  • Supply Giant 2 Gallon Capacity Mini Thermal Expansion Tank for Tankless or Point-of-Use Water Heaters, 304 Stainless
  • Supply Giant 2 Gallon Capacity Mini Thermal Expansion Tank for Tankless or Point-of-Use Water Heaters, 304 Stainless
  • Supply Giant 2 Gallon Capacity Mini Thermal Expansion Tank for Tankless or Point-of-Use Water Heaters, 304 Stainless
  • Supply Giant 2 Gallon Capacity Mini Thermal Expansion Tank for Tankless or Point-of-Use Water Heaters, 304 Stainless
  • Supply Giant 2 Gallon Capacity Mini Thermal Expansion Tank for Tankless or Point-of-Use Water Heaters, 304 Stainless
  • Supply Giant 2 Gallon Capacity Mini Thermal Expansion Tank for Tankless or Point-of-Use Water Heaters, 304 Stainless
  • Supply Giant 2 Gallon Capacity Mini Thermal Expansion Tank for Tankless or Point-of-Use Water Heaters, 304 Stainless
  • Supply Giant 2 Gallon Capacity Mini Thermal Expansion Tank for Tankless or Point-of-Use Water Heaters, 304 Stainless
  • Supply Giant 2 Gallon Capacity Mini Thermal Expansion Tank for Tankless or Point-of-Use Water Heaters, 304 Stainless
  • Supply Giant 2 Gallon Capacity Mini Thermal Expansion Tank for Tankless or Point-of-Use Water Heaters, 304 Stainless
  • Supply Giant 2 Gallon Capacity Mini Thermal Expansion Tank for Tankless or Point-of-Use Water Heaters, 304 Stainless
Supply Giant 2 Gallon Capacity Mini Thermal Expansion Tank for Tankless or Point-of-Use Water Heaters, 304 Stainless

Supply Giant 2 Gallon Capacity Mini Thermal Expansion Tank for Tankless or Point-of-Use Water Heaters, 304 Stainless

$44.99
$44.99 $69.99

Key features

  • MINI THERMAL EXPANSION TANK FOR SMALL WATER HEATERS – Compact expansion tank designed for point-of-use water heaters with a storage capacity of up to 2 gallons and compatible tankless water heater installations. Note: "2 Gal." refers to the compatible water heater capacity, not the expansion tank's volume.
  • PROTECTS AGAINST THERMAL EXPANSION AND EXCESS PRESSURE – Absorbs the pressure spike created when heated water expands in a closed plumbing system, protecting the water heater, fixtures, valves, and supply lines from damage and extending heater life.
  • 304 STAINLESS STEEL CONSTRUCTION – Corrosion-resistant 304 stainless steel shell built for potable hot water systems, delivering long service life in humid and demanding installation environments.
  • COMPACT, EASY INSTALLATION – Mini footprint fits in tight spaces where a full-size expansion tank won't—under sinks, in closets, and beside point-of-use heaters. Installs on the cold-water supply line serving the water heater with a standard 1/2 in. Male Pipe Thread (MIP) connection using basic hand tools.
  • IDEAL FOR POINT-OF-USE APPLICATIONS – The right-sized solution for under-sink water heaters, office kitchenettes, wet bars, garage utility sinks, and other small-capacity installations for plumbers, contractors, and DIY homeowners.

The Supply Giant Mini Thermal Expansion Tank provides reliable protection for point-of-use water heaters with a storage capacity of up to 2 gallons and compatible tankless water heater installations. To clarify sizing, the 2-gallon designation refers to the compatible water heater capacity, not the expansion tank's actual volume. When water is heated in a closed plumbing system, it expands and creates excess pressure that can stress the water heater, relief valve, fixtures, and supply lines. This mini expansion tank absorbs that expansion, helping stabilize system pressure to prevent potential damage and extend the life of your water heater. The corrosion-resistant 304 stainless steel shell is built for potable hot water systems and long-lasting performance in humid environments. Its compact design installs easily in tight spaces—under kitchen and bathroom sinks, in utility closets, and alongside point-of-use heaters—where a standard expansion tank simply won't fit. A smart upgrade for plumbers, mechanical contractors, and homeowners installing or servicing small point-of-use and tankless water heating systems. Backed by PLUMBFLEX quality.

Free shipping included. 30-day hassle-free returns.

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