Eastman Thermal Expansion Tank Snake-It The oxygen diffusion barrier applied

The oxygen diffusion barrier applied to the exterior limits oxygen permeation through the piping wall in hydronic heating applications which prevents corrosion of ferrous metal parts in the heating system

Factory-installed durable

Ideal for use in areas where shocks occur more often such as kitchens

5" Thick Saplings Cutting Height 3

Eastman Thermal Expansion Tank Snake-It The oxygen diffusion barrier appliedThe Eastman thermal expansion tank is designed to prevent dangerous build ups of pressure in your water heater tank. These thermal expansion tanks are available in 2 and 4. 5 gallon sizes. The Eastman thermal expansion tank stops hot water from backflowing into the cold water line while preventing hot water from escaping through the pressure relief valve and onto the floor, addressing the constant fluctuations in water pressure that can be dangerous