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4.5 Gallon Thermal Expansion Tank, 304 Grade Stainless Steel 3/4' MNPT Connection, Butyl Rubber Diaphragm, Prevent hot Water from backflowing into The Cold Water Pipe line

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$67.00

$ 29 .99 $29.99

In Stock

1.Color:4.5 Gallons


About this item

  • 〚PROS CHOICE〛 Trusted by plumbing professionals for years and sold in millions across the US, HPS proudly introduces Easyflex Thermal Expansion Tanks, now available on Amazon.
  • 〚PREMIUM QUALITY〛 Built with 16 gauge cold rolled steel and fitted with a stainless-steel ¾” MIP connection to withstand wear and ensure long-term reliability. The diaphragm is 100% butyl rubber, lined with polypropylene.
  • 〚EASY INSTALLATION〛 Designed for quick and straightforward installation, saving time and reducing setup complexity. An optional mounting bracket kit is available to safely secure the tank to the wall.
  • 〚CAPACITIES〛 Our thermal expansion tanks are available in 2 sizes: 2.1 gallons and 4.5 gallons to accommodate various water heaters models.
  • 〚PEACE OF MIND〛 Our tanks are certified by UPC, comply with NSF-61, and are lead-free. They protect against costly repairs and replacements of water heater systems by efficiently managing pressure and volume changes.
  • 〚MAX PROTECTION〛 Helps maintain safe pressure levels within the water heater by absorbing excess water volume while reducing stress on water heating system components, prolonging their lifespan.



Product Description

Thermal Expansion Tanks

Thermal Expansion Tanks

Introducing Easyflex Thermal Expansion Tanks, designed to safeguard your water heater systems from thermal expansion. Available in 2.1 and 4.5 gallon capacities, these tanks effectively absorb the increased volume of heated water, preventing pressure build-up that can damage your system. Easy to install and maintain, these tanks can be mounted vertically or horizontally on the wall, especially with an Easyflex expansion tank mounting kit. Perfect for both residential and commercial use, their durable construction ensures long-lasting reliability and performance. Upgrade your system with Easyflex Thermal Expansion Tanks for ultimate protection and peace of mind.

what's in the box
Expansion Tank

APPLICATIONS and BENEFITS

· Safeguards Against Pressure Buildup

· Extends Water Heater Life

· Provides More Hot Water

· Prevents LeaksCSA Certified

Product Details

  • 16 Gauge Cold Rolled Steel Shell
  • Butyl Rubber Diaphragm
  • Stainless Steel Connection
  • Corrosion Resistant Coating
  • UPC Certified
100% Leak Tested

SPatterson
Reviewed in the United States on April 13, 2025
No complaints. Wish there was some reference of disinfection. Is it ready for use or does it need to be disinfected prior to use. Also, we not include the wall support.
Edward Lucas
Reviewed in the United States on September 27, 2024
I ordered this 4.5 Gallon Thermal Expansion Tank for a water heater replacement project.Several features attracted me to this product.First and foremost, the tank is made of 16-gauge steel, which makes it very durable.Second, the diaphragm materials (100% butyl rubber, lined with polypropylene) complement the tank's durability.Third, the entire product is lead-free.Finally, I also appreciate the 304 Grade Stainless Steel ¾" connection.My experience with this Thermal Expansion Tank has been highly favorable, and I recommend it without reservations.Note: I prefer the larger tank because it has a greater capacity to absorb water expansion, which occurs as the water temperature increases inside the water heater.
Tyler
Reviewed in the United States on September 24, 2024
This tank was super easy to install and has been working well ever since. I did not notice any quality related issues prior to installation. The tank was well made and functions well.
James M.
Reviewed in the United States on September 23, 2024
The 4.5 Gallon Thermal Expansion Tank is a great addition to any hot water system. The 304-grade stainless steel construction feels durable and ensures resistance to corrosion, which is a must for long-term use. The 3/4" MNPT connection is standard, making installation straightforward and hassle-free. The butyl rubber diaphragm inside does an excellent job of preventing hot water from backflowing into the cold water lines, which helps maintain system pressure and prevents damage to plumbing fixtures.Overall, this expansion tank is well-built and reliable, perfect for homeowners or professionals looking for a quality solution. Highly recommended for those looking to improve their water heating system's safety and efficiency.
David68
Reviewed in the United States on September 2, 2024
This thermal expansion tank was an essential component for my hydronic floor heating project. I'm using a heat pump water heater to warm the water, and the tank effectively compensates for the liquid expansion that occurs when the system is operational.This product is the perfect size, and I used wall clamps to securely mount it to the wall. The stainless steel MIP connection indicates excellent build quality. It's pre-pressurized to 40 PSI, so it's ready for immediate use.
Nancy
Reviewed in the United States on September 17, 2024
Replaced the water heater in an old house and by code had to add in an expansion tank. This was a simply addition and this tank seems to be well made. I was am happy with the tank and for the price it meets my needs.
ammo82
Reviewed in the United States on September 12, 2024
Home never had one of these installed. So when I replaced my hot water heater the code changed to add one. Very easy to install and seems to be solidly built.
Ron Honigford
Reviewed in the United States on November 4, 2024
Works great. Difficult to find a bladder tank that will work with hot water. This one does!