国产成人在线观看_青青草91视频_日韩一二在线_天天操91_国产精品内射后入合集_四库成人免费视频

The opening and closing part of the lubricated plug valve (X47W) is a perforated cylinder that rotates with the stem about an axis perpendicular to the passage for the purpose of opening and closing the passage.Oil-sealed plug valves are mainly used for opening and closing pipes and equipment media.Oil-sealed plug valve is suitable for cutting off or connecting the pipeline medium under nominal pressure PN10, working temperature -29 ~ 100℃ in urban construction, chemical industry, metallurgy, petroleum, pharmaceutical industry, food, beverage, environmental protection industry and other working conditions.

Product model: X47W
Nominal diameter: DN50~300mm
Pressure range: PN10Mpa
Operating temperature: -29 ~ 100℃
Main material: gray cast iron
Design criteria: API 6D, API599
Structure length: ASME B16.10, GB/T 12221, HG/T 3704
Connection standard: ASME B16.5, GB/T 9113
Pressure test: API 598, GB/T 13927
Pressure - temperature class: ASME B16.34, GB/T 12224