99精品国产高清一区二区,草草网站影院白丝内射,中文 在线 日韩 亚洲 欧美,免费人成在线观看网站品善网 国产激情无码视频在线播放性色_国产色精品VR一区二区_污18禁污色黄网站免费_被男人嗦过奶头一下就变大了

Home / Product

Product

Fire

Fire protection special elastic seat seal gate valve

Nominal pressure:PN1.0~2.5MPa
Nominal diameter:DN50~300mm

In addition to the advantages of the flexible seat seal gate valve, the open degree of the valve can be displayed more directly, so that the opening degree of the valve can be judged at a distance and corresponding measures can be taken in time. Fast and reliable opening and closing, often used in fire fighting systems.

消防專用彈性座封閘閥03.png