Zurn® Wilkins Thermal Expansion Tank, Series: XT Series, 4.5 gal Tank Volume, Acceptance Volume: 2.4 gal, 150 psi, ASME Yes/No: No, 11 in Dia, 13-1/2 in Height, Carbon Steel, 40 psi Pre-Pressure Rating, 200 deg F Maximum Temperature, MNPT, 3/4 in, Epoxy Coated
| Series | : | XT Series |
| Tank Volume | : | 4.5 gal |
| Acceptance Volume | : | 2.4 gal |
| Pressure Rating | : | 150 psi |
| ASME Yes/No | : | No |
| Diameter | : | 11 in |
| Height | : | 13-1/2 in |
| Material | : | Carbon Steel |
| Pre-Pressure Rating | : | 40 psi |
| Maximum Temperature | : | 200 deg F |
| Connection Type | : | MNPT |
| Connection Size | : | 3/4 in |
| Finish | : | Epoxy Coated |
- Pre-charge is field adjustable for convenient maintenance
- Carbon steel shell with polypropylene liner ensures long-lasting construction
- Stainless steel connection resists corrosion
Warranty Information
The 4.8 gallon XT-18 Thermal Expansion Tank is utilized on potable water lines between the backflow preventer or pressure reducing valve and the water heater for protection against water thermal expansion in residential applications. As the system pressure increases, water enters the polypropylene-lined water chamber of the tank, expanding a diaphragm into a pre-charged air chamber to keep the system pressure below the relief valve setting. Materials include a carbon steel shell with an epoxy finished coating, and corrosion-resistant stainless steel connection with a polypropylene liner and Butyl rubber diaphragm.