Determination of gas flow characteristics in control ball valves for different stem turn angles

The article considers the problem of determining characteristics working media that flow in flowing channels control ball valves. A mathematical model gas medium a valve for different angular positions regulating body (stem) was developed typical widespread design this type computational study carried out to determine pressure and velocity fields, dependence resistance rate on angle turn stem. On basis available experimental standard valves, comparison with calculated data verification is out. satisfactory agreement obtained, an average deviation 15%.