The superheater tubes end in a spherical seat.
这过热头管子末端在球形的位置上。
Second , Tight sealing , trim and sealing seat are contacting of spherical . It relies three-eccentric to achieve non-leakage;
密封严紧，阀芯和阀座的密封是球面线接触，靠三维偏心实现零泄漏；
Appear before the installation of seat spherical bearings with aligning properties, can reduce installation errors.
座圈的安装面呈球面的轴承，具有调心性能，可以减少安装误差的影响。
Appear before the installation of seat spherical bearings with aligning properties, can reduce installation errors.
座圈的安装面呈球面的轴承，具有调心性能，可以减少安装误差的影响。
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