flange with spherical seat 有关节的凸缘
The superheater tubes end in a spherical seat.
这过热头管子末端在球形的位置上。
The outside diameter, outer ring width and shaft seat diameter are identical to the dimensions of the standard spherical roller bearings range.
外部直径，外圈的宽度和轴座直径相同的尺寸标准的球面滚子轴承范围。
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；
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