大战熟女丰满人妻av,国产成人8x视频网站入口,色欲av无码一区二区三区,高清中文字幕在线a片

Current Location：Home> Products > Ball valve > Metal hard sealing ball valve Metal hard sealing ball valve

Metal hard sealing ball valve

Compared with the soft sealing ball valve, the metal hard sealing ball valve can adapt to a wider range of temperature and fluid medium fields. Under the working condition, the sealing is safe and reliable, with long service life, convenient operation and small pressure loss. It is mainly used for high temperature, high pressure, strong corrosive and working conditions containing granular media, such as coal chemical industry, polysilicon, sulfuric acid / nitric acid and other industries.

Design feature:

Hard sealing between the ball and the valve seat

The fixed type has double blocking and discharging function

pressure self relief in the middle cavity

? anti blow out valve rod

as the function of dust-proof and self-cleaning

Anti static device

Product scope:

steel, stainless steel, alloy steel, duplex steel

Trim material: carbon steel, stainless steel, duplex steel

View Detail