


Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The Watts ETX-90 is a robust expansion tank designed for heating systems, ensuring thermal expansion control and system pressure regulation. Ideal for both commercial and residential closed loop hydronic systems, this tank integrates seamlessly into your system's pipeline.
This expansion tank model ETX-90, features a 13 gallon capacity and is constructed with durable steel and a flexible butyl diaphragm, which prevents water and air contact within the tank, ensuring the longevity and efficiency of your heating system components.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
Add install kit to cart
—
Thanks for subscribing!
This email has been registered!
