The Watts ETX-30 Expansion Tank (Model 0066606) is a purpose-built replacement expansion tank engineered to deliver long-lasting, reliable performance in compatible Watts ETX-30 systems. Featuring a 1/2" connection, it integrates seamlessly as a direct replacement component.
Constructed from high-quality plastic for durability, this expansion tank is designed to maintain system pressure and protect plumbing infrastructure, making it an ideal solution for residential and light commercial applications requiring dependable expansion control.