PVI specializes in medium to large ASME water heaters fabricated from AquaPLEX® duplex stainless steel for commercial and ins ... titutional installations such as schools, hotels, hospitals, dormitories, apartments, correctional facilities, and military barracks. PVI heaters can be configured for any common energy source including natural or LP gas, oil, boiler water, solar, steam, electricity and waste heat. Water heaters range from instantaneous (on demand water heating) to storage type heaters with pressure vessels from 150 to 4500 gallons. Many products are “engineered-to-order” to exactly match the requirements of the application. Storage tanks manufactured from AquaPLEX® duplex stainless steel are naturally corrosion resistant and require no linings or anode rods. read more