套筒阀也称笼式阀,这是六十年代发展起来的一种产品,国外在Dg25～300的普通型调节阀中所有的单、双座阀基本上被它替代,国内也已经统一设计后投入生产。作者在本文中就这种调节阀的特点作了初步分析。 Sleeve valve, also known as cage valve, which is developed in the sixties a product of foreign Dg25 ~ 300 ordinary type in all single-valve, double-seat valve is basically replaced by it, the country has also been unified design After put into production. The author in this article made a preliminary analysis of the characteristics of this valve.