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Honeywell TX-5

2 Gallon Thermal Expansion Tank


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The Honeywell Thermal Expansion Absorber is an expansion tank with a butyl diaphragm. The Thermal Expansion Tank controls pressure build-up in the system, eliminates relief valve spillage, protects fixtures and extends water heater life.
  • Heavy duty butyl rubber diaphragm (FDA approved) isolates water from air.
  • Polypropylene liner, 100% non-metallic, non-corrosive water reservoir.
  • Prevents water hammer.
  • Maintenance free.
  • Protects water heater from harmful pressure cycling.
  • Allows storage of expanded water with no increase in system pressures.
  • Prevents backflow when supply pressure falls below system pressure. 

Max Temp
200 °F
Tank Volume
2 Gallons
Max Accept Volume
.9 gallons
Max Water Pressure
150 PSI
Product Weight
5 lbs
8 Inches
12 5/8 Inches

In 2002 Alpine Home Air Products became the first company to sell heating, air conditioning and indoor air-quality products online. We have proudly served hundreds of thousands of customers, helping them save time and money by buying their products direct.