The Inox-Pro Z8, Z12 and Z18 304 Stainless Steel expansion tanks with a food grade internal membrane, are fit for all applications near coastal areas where the presence of brackishness or harsh chemical environments that rapidly corrode all parts made of plain steel. They allow water expansion in domestic heating systems equipped with boilers or heat exchangers. They are also used in every application where ultimate hygiene is required, as in a house or a community. NSF61 Certified for use with potable water. The Inox-Pro Z8, Z12 and Z18 304 Stainless Steel expansion tanks with a food grade internal membrane, are fit for all applications near coastal areas where the presence of brackishness or harsh chemical environments that rapidly corrode all parts made of plain steel. They allow water expansion in domestic heating systems equipped with boilers or heat exchangers. They are also used in every application where ultimate hygiene is required, as in a house or a community. NSF61 Certified for use with potable water.https://www.aquascience.net/products/pumps-tanks-well-components/zilmet-pressure-tanks
