无磨损球形止回阀

摘要

论述了无磨损球形止回阀QH44、QH45型的结构、工作原理、性能和特点。介绍了该阀的计算方法。%It deals with the structure and working principle, performance and characteristic of the QH44, QH45 type of the zero wear ball-check valve, This article concludes the application of this product.