New Lotoke District Heating Triple Offset Butterfly Valve design is recommended for Russian district heating applications requiring reliable zero-leakage, PN25,butt weld,bi-directional sealing in 270℃ water or steam conditions of critical processes, steam isolation, and temperature extremes within co-generation (combined heat& power) systems, available in carbon and stainless steel the valves are designed for durability to provide low life time costs.