Stainless steel water heaters are lighter than glass-lined ones because the material alone is thinner, plus they don’t have any supplemental lining. The glass lining or vitrification process imparts these tanks the versatility to provide a range of applications, from potable water storage to warm water storage and wastewater cure. https://travisdrfnv.wikipowell.com/5623635/not_known_factual_statements_about_glass_lined_reactors_manufacturer