Thermal Expansion Tanks
Zilmet Cal-Pro Hydronic System Expansion Tanks
These expansion tanks are used for heating systems. Not potable water rated.

Zilmet Flats Space Saving Hydronic System Expansion Tanks
Zilmet Flat expansion tanks provide both space saving and a tighter, more professional look for hydronic system expansion.

Zilmet Hydro-Plus Potable Water Expansion Tanks
Potable water expansion tanks. NSF 61 certified. Suitable for domestic water heating systems, electric pumping, water hammer.

why buy from us?
We're engineers passionate about home ventilation and serious about customer service – so you can count on us for carefully-selected equipment and expert advice to ensure your project is a success from specification to installation.
Your call is answered by qualified people who will gladly discuss your project in detail, advise you professionally and never sell you inappropriate products.