Skip to the content

Free Shipping On Orders Over $89 | Call Our Experts Today

Search for products

(800) 468 5997

Heating
Plumbing
Fittings
Valves
HVAC
Irrigation
Hardware
Kitchen & Bath
Tools
Brands
About Us

Need help?

(800) 468 5997

Heating
Plumbing
Fittings
Valves
HVAC
Irrigation
Hardware
Kitchen & Bath
Tools
Brands
About Us

Your cart

Your cart is empty

Expansion Tanks

Home »Inline

Collection: Expansion Tanks

Filter products

Filter

Brand

Search

Elbi
Zurn

Type

Search

Expansion Tanks

Size

Search

1/2"
3/4"
1"

Volume

Search

2 to 5 Gallons
5 to 10 Gallons
10 to 25 Gallons

Installation

Search

Inline

Price

Search

$25 to $50
$50 to $75
$75 to $100
$200 to $250
$550 to $600

Sort by:

8 Products

Elbi

12-A102 - Backstop Thermal Expansion Tank - 4.5 Gallon

In stock

(0)

Regular price $79.99
Elbi

XT-30 - Diaphragm Hydronic Expansion Tank - 5 Gallon

In stock

(2)

Regular price $64.00
Zurn

XT-35 - Thermal Expansion Tank - 9 Gallon

In stock

(0)

Regular price $562.09
Elbi

12-A101 - Backstop Thermal Expansion Tank - 2.1 Gallon

In stock

(0)

Regular price $48.99
Elbi

12-TWH2 - Tankless Water Heater Expansion Tank

In stock

(1)

Regular price $25.90
Elbi

XT-15 - Diaphragm Hydronic Expansion Tank - 2.1 Gallon

Out of stock

(0)

Regular price $48.00

Out of stock
Elbi

XT-60 - Diaphragm Hydronic Expansion Tank - 6.5 Gallon

In stock

(0)

Regular price $98.00
Elbi

XT-90 - Diaphragm Hydronic Expansion Tank - 13 Gallon

In stock

(0)

Regular price $244.00

Fast Shipping!

Most items are ready ship immediately. Delivery in 2 to 3 business days!

Pro Program

Apply for our Pro Program and receive trade discounts!

We're Here to Help!

Our friendly staff is product certified and ready to help you!

Let's Keep in Touch

Stay updated on new products and promotions

Your email

We're here to help!
Monday - Friday
9:30 AM - 6:00 PM PST
(800) 468-5997

Customer Service

Contact Us
Pro Program
Returns

Company Info

Our Story
Shipping Policy

Legal

Terms of Service
Privacy Policy

Facebook
Instagram

© 2026, SupplyStop.com

Payment methods