亚洲视频在线看_在线不卡免费视频_日韩欧美精品一区二区_欧美激情五月婷婷_日韩一区电影_v天堂在线

current location: Home   >> News >> Company news

Description of LPG ball valve

The hand-wheel, handle operated striated pipe globe valve can be installed in any position of the pipe. Handwheel, handle and wetting mechanism are not allowed to be used for lifting. The flow of the medium shall be in the same direction as the arrow shown in the valve body.

LPG ball valve, also known as the closure door, is a widely used valve, it is popular, because the process of opening and closing between the sealing surface friction is small, relatively durable, open height is not large, easy to manufacture, easy to maintain, not only suitable for low and medium pressure, but also for high pressure. Its closure principle is, rely on the pressure of the valve, so that the disc sealing surface and seat sealing surface close to prevent the flow of media.

LPG ball valve allows only one - way flow medium, installation direction. Its structure length is larger than the gate valve, at the same time the fluid resistance is big, when running for a long time, the sealing reliability is not strong.



主站蜘蛛池模板: 国产精品成人一区二区三区 | 亚洲 欧美 日韩 在线 | 中出片| 日韩成人在线免费视频 | 日本手机在线视频 | 日韩在线中出 | 日韩欧美一区二区三区免费观看 | 性一交一乱一透一a级 | 狠狠干美女| 午夜精品一区二区三区在线视频 | 成人精品视频99在线观看免费 | 成人免费毛片高清视频 | 精品国产乱码一区二区三区 | 欧美理伦片在线播放 | 亚洲欧美中文日韩在线v日本 | 欧洲一级毛片 | 国产美女网站视频 | 国产成人精品网站 | 9999国产精品欧美久久久久久 | 一区二区精品在线 | 99热在线播放 | 99精品国产在热久久 | 欧美一区2区三区3区公司 | 中国大陆高清aⅴ毛片 | 亚洲毛片在线观看 | 国产欧美精品一区二区三区四区 | 国产精品国产精品国产专区不卡 | www久久久久久久 | 久久毛片 | 91精品国产91综合久久蜜臀 | 精品成人一区二区 | 久久av资源| 午夜精品久久久久久久久久久久 | 久久网页 | 亚洲三区在线观看 | 国产成人精品一区二区 | 999视频在线免费观看 | 欧洲亚洲视频 | 亚洲色图88| 亚洲成av人片一区二区三区 | 精品久久久久久 |