少妇AV一区二区三区无码,日久精品不卡一区二区,国产熟妇按摩3p高潮大叫,а√天堂8资源在线官网

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