Skip to content

Your cart is empty

Continue shopping

Have an account?

Log in to check out faster.

Your cart

Loading...

Order special instructions

Estimated total

$0.00 USD

Taxes, discounts and shipping calculated at checkout.

Notice: Due to ongoing uncertainties with cross-border shipping regulations to the U.S., some orders may experience slight delays. Additionally, there is a possibility of cross-border duty charges upon delivery, though this may vary. We remain committed to ensuring a smooth shopping experience and appreciate your understanding.

Free shipping over CAD$100 in Canada (Except the Territories). Free shipping over USD$150 in USA (Except Alaska)

  • Home
  • Products
    • All products
    • Hydronic Products
      • Hydronic Accessories
      • Expansion Tanks
      • Thermostats & Controls
      • Condensate Removal
      • Air&Hydro Separation
    • Pump Spare Parts
      • Type 21 Seals
      • Seals-Grundfos
      • Gaskets-Armstrong
    • Test & Measurement
    • Tools
  • About us
  • Contact
Log in

Country/region

  • Canada CAD $
  • United States USD $
  • X (Twitter)
  • Facebook
  • Instagram
  • TikTok
  • YouTube
HydronicShop
  • Home
  • Products
    • All products
    • Hydronic Products
      • Hydronic Accessories
      • Expansion Tanks
      • Thermostats & Controls
      • Condensate Removal
      • Air&Hydro Separation
    • Pump Spare Parts
      • Type 21 Seals
      • Seals-Grundfos
      • Gaskets-Armstrong
    • Test & Measurement
    • Tools
  • About us
  • Contact
Log in Cart
Remove all
Filter Filter

Filter

Filter

3 products

Remove all
Remove all

3 products

  • HTX 30 Flexcon Hydronic Expansion Tank 4.5 Gal

    HTX 30 Flexcon Hydronic Expansion Tank 4.5 Gal

    HTX 30 Flexcon Hydronic Expansion Tank 4.5 Gal

    Regular price $71.00 USD
    Regular price Sale price $71.00 USD
  • HTX 60 Flexcon Hydronic Expansion Tank 6.0 Gal

    HTX 60 Flexcon Hydronic Expansion Tank 6.0 Gal

    HTX 60 Flexcon Hydronic Expansion Tank 6.0 Gal

    Regular price $81.00 USD
    Regular price Sale price $81.00 USD
  • HTX 15 Flexcon Hydronic Expansion Tank 2.1 Gal

    HTX 15 Flexcon Hydronic Expansion Tank 2.1 Gal

    HTX 15 Flexcon Hydronic Expansion Tank 2.1 Gal

    Regular price $60.00 USD
    Regular price Sale price $60.00 USD

Subscribe to our emails

Be the first to know about new collections and exclusive offers.

Shop

  • Search
  • Products
  • Contact us
  • Terms of Service
  • Refund policy

About

  • Terms of service
  • Return policy
  • Privacy Policy

Subscribe to our emails

Country/region

  • Canada CAD $
  • United States USD $
© 2026, HydronicShop Powered by Shopify
  • Refund policy
  • Privacy policy
  • Terms of service
  • Shipping policy
  • Choosing a selection results in a full page refresh.
  • Opens in a new window.