The Viessmann Vitocell 300-V EVIB 119 gallon indirect-fired domestic hot water storage tank is a vertical stainless steel cylinder designed for high-performance hot water heating applications. Constructed of high-grade stainless steel, the EVIB series features a single stainless steel heat exchanger coil for efficient heat transfer and hygienic water storage. This model is engineered for use with modulating and low temperature hot water heating boilers and is rated for a maximum domestic hot water working pressure of 150 psig and heating water side pressure up to 220 psig.