Use parameters: maximum pressure: 1.8Mpa highest temperature: 300 degrees Maximum speed: 350 ° C Suitable medium: saturated steam, superheated steam, water, and other structural features: external pressure type spherical seal the new design of the external pressure spring compensation. Joints in the course of the spring is not a fluid medium. Can be freely adjusted, thereby reducing the torsional forces, the stability of operation, so that the sealing surface of the compensation is more effective.