对夹升降式止回阀 H71H-16Q，H71H-25Q，H71W-25H，H71W-25P，H71W-40H，H71W-40P，


阀门


阀瓣


弹簧




H71H-16Q H71H-25Q


QT400-15


25


50CrVA




H71W-25H H71W-40H


2Cr13

01/22 18:54