Zurn Wilkins Wilkins Water Thermal Expansion Tank, 9.25 Gallon

Product Description

Designed for installation on potable water lines between the backflow preventer or pressure reducing valve and the water heater to protect against water thermal expansion. When system pressure increases, water enters the tanks polypropylene lined water chamber which expands a diaphragm into a pre-charged air chamber, keeping system pressure below the relief valve setting. Outer shell - Carbon Steel Coatings - Epoxy finish (outer shell) Connection - Stainless Steel Liner - Polypropylene Diaphragm - Butyl Rubber