新闻中心
NEWS
Issues that need to be paid attention to when using manual valves
Manual valves are widely used valves, and their handwheels or handles are designed according to ordinary manual labor, taking into account the strength of the sealing surface and the necessary closing force. Therefore, it is not possible to use a long lever or a long wrench to move the board. Some people are accustomed to using a wrench and should be strictly careful not to use too much force, otherwise it may damage the sealing surface or break the handwheel or handle.
12
2021-11
Installation and use of gate valves
Gate valves are block valves, and their sealing performance is inferior to that of globe valves. The main "responsibility" of the gate valve is to "cut off" the flow and to "continue flow" with a small resistance. It is not suitable for regulating the flow rate and pressure of the medium. If used for a long time, the sealing surface is prone to erosion and wear by the medium, which affects the sealing performance.
12
2021-11
What is the difference between cast iron valves and cast steel valves
The main difference between cast iron and iron steel valves is their carbon content, which directly affects the strength and plasticity of the steel. Carbon steel, also known as carbon steel, is an iron carbon alloy with a carbon content of less than 2%. In addition to carbon, carbon steel generally contains a small amount of silicon, manganese, sulfur and phosphorus. According to the use, carbon steel can be divided into three categories: carbon structural steel, carbon Tool steel and free cutting structural steel.
09
2021-11
The working principle and characteristics of butterfly valves
Butterfly valve is a valve that drives the disc plate to rotate based on the opening and closing of the rotary valve. In the cylindrical channel of the butterfly shaped body, the disk rotates around the axis, mainly rotating the plate 90 degrees. When the flow control panel reaches 90 degrees, the valve is fully open and the medium flow can be adjusted by changing the angle of the valve.
09
2021-11