DIN F4 non-rising stem resilient gate valve的简单介绍铸铁德标暗杆软密封闸阀,外观设计新颖,低扭矩运行,阻力小DIN F4 non-rising stem resilient gate valve的详细信息standards Design:Din 3352 Face to Face: Din 3202-F4 Flange:DIN 2531/2532/2533(PN6/PN10/PN16) Test working pressure : PN10 PN16 shell pressure: 15bars 24bars seat pressure: 11bars 17.6bars |