| 摘要 |
FIELD: machine building.SUBSTANCE: invention relates to valve and accessories, particularly to control valve to adjust fluid flow rate in gas and air lines. Control valve comprises body with seat made in through channel. Valve gate is rigidly fitted on pin in said body in bearing bushes and coupled with the drive, Saud bushed are made from material of hardness higher than that of valve body. Bush outer surface is corrugated. Crimps are cut in body material at fitting of bushes therein. Note here that clearance exists between bush smooth surface and body.EFFECT: decreased stress in plain bearings at about 400-500°C and higher reliability.4 dwg |
