The butterfly valve was invented in the United States in the 1930s. It was introduced to Japan in the 1950s and was not widely used in Japan until the 1960s. It was not popularized in my country un...
Gate Valve
Advantages
1.They can provide an unobstructed flow in the fully open position so pressure loss is minimal.
2.They are bi-directional and allow uniform linear flows.
3.No residues are lef...
1.The stem of the OS&Y gate valve is exposed, while the stem of the NRS gate valve is in the valve body.
2.The OS&Y gate valve is driven by the thread transmission between the valve ...
1. In practical engineering applications, the damage of Dual plate wafer check valves is caused by many reasons.
(1) Under the impact force of the medium, the contact area between the connecting pa...
Check valves, also known as check valves or check valves, are used to prevent the backflow of media in the pipeline. The foot valve of the suction off of the water pump also belongs to the category...
The difference between domestic valves and imported valves is mainly reflected in the following aspects:
1. Materials and processes:
Imported valves: usually selected raw materials, such as sta...