国产国产午夜福利视_好吊妞在线_欧美国产一二区_a在线亚洲男人的天堂在线_久久人做人爽一区二区三区小说_免费看av在线

The valve adopts precise J-shaped elastic sealing ring and three-eccentric multi-level metal hard sealing structure, which is widely used for regulating flow rate and broken flow body in industrial pipelines with medium temperature ≤425℃, such as gold treatment, electric power, petrochemical industry, water supply and drainage industry and municipal construction industry.The valve adopts three eccentric structure, the valve seat and disc sealing surface are made of different hardness and stainless steel, with good corrosion resistance and long service life, the product conforms to GB/T13927-92 valve pressure test standard.

Product model: D343W/H
Nominal diameter: DN50~2000mm
Nominal pressure: PN0.6~ 4.0mpa
Applicable temperature: -29~425℃
Applicable medium: water, steam, oil, etc
Driving mode: worm wheel drive, electric, pneumatic, hydraulic
Design and manufacturing standard: GB/T 12238-2008
Structural length standard: GB/T 12221-2005
Connection flange standard: GB/T 9113
Pressure and temperature class: GB/T 12224-2005
Test standard: GB/T 13927-2008