Flow control elements 352, 354 are dimensioned to be inserted into cylindrical cavities 216, 218, with flanges 358 of elements 352, 354 abutting planar surface 214 of valve body 212.

• 此流量控制元件352,354设计成能插入圆柱形腔体216,218之中，其元件352,354凸缘处358邻接阀体212的平面214。