Introduction to ball valve:
Ball valve is mainly used to cut off, distribute and change the flow direction of medium in the pipeline. Ball valve is a new type of valve widely used. Its working principle is to make the valve unblocked or blocked by rotating the valve core. The ball valve has the advantages of light switch and small volume. It can be made into a large diameter, reliable sealing, simple structure and convenient maintenance. The sealing surface and spherical surface are often closed, which is not easy to be eroded by the medium. It has been widely used in various industries.
Features of ball valve:
Stainless steel ball valve can be closed tightly only by rotating 90 degrees and small rotating torque. The completely equal inner cavity of the valve body provides a very small resistance and straight flow channel for the medium. The main feature of the ball valve is its compact structure and easy operation and maintenance. The stainless steel ball valve can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil products, liquid metal and radioactive media. The ball valve body can be integral or combined. This type of valve shall be installed horizontally in the pipeline. Classification of stainless steel ball valve: stainless steel pneumatic ball valve, stainless steel electric ball valve and stainless steel manual ball valve. Stainless steel ball valves are made of 304316321 stainless steel ball valves.
Precautions for ball valve operation:
1. Stainless steel valves shall avoid contact with other metals. Note that there shall be no garbage and other foreign matters inside, and shall be stored in a well ventilated environment.
2. In order to protect the inner gasket of the ball valve, the ball valve shall be in the fully open state, and the gate valve, stop valve and check valve shall be kept in the fully closed state.
3. Before piping construction, confirm the state of the interface, whether there is oil stain, etc., and remove the attached foreign matters if any.
4. There is a specified flow direction on the valve body. During piping construction, the flow direction shown on the valve body shall be confirmed. During installation, the fluid direction shall be consistent with the arrow on the valve body,
5. When the pipe is connected with the valve, fix it with a wrench at the valve end near the side of the pipe, and then tighten the steel pipe with a pipe wrench. If the thread is screwed too far, the end of the steel pipe will damage the inside of the ball valve.
6. When tightening the bolts, do not tighten only one side, but tighten the bolts on the corresponding diagonal.
7. For the valve with sealing ring, due to the characteristics of the sealing ring, the pressure of the sealing parts will drop during storage, resulting in leakage. Be sure to tighten the loose screws before use. Loose screws should also be checked regularly during normal use.
