国产麻豆精品在线,国产男女交性全过程无遮视频,亚洲午夜成人,四虎永久,国产精品原创,欧美亚洲一区二区精东传媒

current location: Home   >> News >> Company news

Introduction to forged steel ball valve

The forged steel ball valve is mainly used for long-distance pipeline transportation of oil and natural gas and urban gas pipeline system. Because of the unique characteristics of long-distance pipeline valves, they are fully designed

Considering its ability to withstand pipeline stress, safety, weather resistance, long-term reliability, etc.

The operating modes are manual - worm and worm wheel drive, pneumatic, electric, pneumatic/hydraulic linkage, electrical/hydraulic linkage, and various special control forms.

Some forged ball valves are marked with arrows on the body. If there is no English FIOW writing attached, it is the direction of sealing seat. It is not used as a reference for medium flow.

The valve leaks in the opposite direction. Normally, two - seat sealed ball valves have two-way flow.進入翻譯頁面