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1·Flow switch can be installed in a reducing tee, standard tee or welded fitting.

开关可以安装在异径三通管，标准三通管或焊接管件上。

2·Developed excogitates of two decumbence and one hovizoutal molding die realized increasing height of branch pipe of heat pressure tee and reducing radius of synodical arc of tee.

研制出两套立式模具和一套卧式模具，实现了用工艺方法增加热挤压三通支管高度，缩小三通相贯区内拐角处圆弧半径的目的。