国产精品久久久久不卡_欧美中文字幕一区二区三区亚洲_91在线精品观看_国产性70yerg老太_国产精品一区二区久久久久_欧美成人精品欧美一_欧美在线亚洲在线_蜜桃传媒一区二区亚洲av_亚洲欧美日韩爽爽影院_国产高清不卡无码视频

Angle globe valve is plug - shaped disc, sealing surface is flat or conical, disc along the center of the fluid to make a straight line of motion.The movement form of the valve stem, there are lifting rod type (stem up and down, handwheel does not rise and fall), there are also lifting rotary rod type (handwheel and valve stem rotate up and down together, nut is located on the valve body).Piped globe valves are for full open and full close only. Adjustment and throttling are not allowed.

Product Model: J44N-40
Nominal Pressure: PN1.6~4.0 (MPa)
Nominal diameter: DN15~300 (mm)
Follow the Specification: STANDARD
Design and fabrication: GB12233/GB 12235
Structure length: GB 12221/JB96 (long series)
Structure length: GB78/JB79 (GB, HG, SH)
Pressure test: GB/T 13927
Logo: GB 12220
Supply: GB/T12252