ProFlo PFXT12I Thermal Expansion Tank, 4.4 GallonsCondition:* New surplus stock, in OEM packaging. As pictured. Additional Notes:* Designed for potable* Hot water systems* Pre-pressurized expansion tank* Eliminates hot water waste* Protects plumbing fixtures* Extends water heater life* Controls pressure build-up* Eliminates relief valve spills* Lead-Free* Factory precharged to 40 psi ProFlo PFXT12I