At assembly, two hardened 416 stainless steel shafts with splines on the inboard ends are swaged into the brass inner disk to become the upper and lower stems.

• 在组装时，两个配置腔内端口花键的硬化416不锈钢轴模压在内部为黄铜的阀瓣上，构成上部和下部阀杆。