Parameters: maximum pressure: 1.8MPa maximum temperature: 220 ° C maximum speed: 100rpm Suitable medium: saturated steam, superheated steam, water, superheated water structural features: a reliable spherical friction seal structure, can be self-aligning, automatic compensation, but with low rotational accuracy, concentricity bad equipment; the internal only four parts, this simple but effective structure, make maintenance more convenient; reliable material guarantee and after lapping spherical The bottom plane, can provide a sufficient service life.