Reverse check valves KO with nominal diameters up to DN 500 for nominal pressures up to PN 40 MPa (400 kgf/cm²) inclusive with different design of flow part (through, angle, straight flow).
The valves are designed for automatic prevention of working medium backflow in pipelines for water, steam, hydrocarbons, their mixtures, as well as other working media with operating temperature from minus 196°C to +560°C, in relation to which the materials of the main valve parts are corrosion- and temperature-resistant.
Valves are designed for operation in areas with temperate and cold climate in versions, respectively, "U", "??" and "???", placement category "1" according to GOST 15150.
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