Ask well wishers to tell us what are the types and uses of valves

A special gas valve is a type of valve used to control and regulate the flow of special gases. Specialty gases usually refer to gases that have some special components added to ordinary gases, such as inert gases, gas mixtures, etc. Special gas valves usually use high-precision control systems and materials to ensure their accuracy and stability in controlling and regulating the flow of special gases.

These valves usually have the characteristics of high strength, corrosion resistance, good sealing, etc., and can adapt to a variety of harsh industrial environments. Special gas valves are widely used in semiconductor, optoelectronics, aerospace, medical and other fields, such as chemical vapor deposition (CVD) and physical vapor deposition (PVD) processes in semiconductor production, vacuum evaporation process in the manufacture of photoelectric display devices, fuel filling and exhaust emission control in aerospace, etc.

1.A gate valve, also known as a gate valve, is a widely used valve. Its closing principle is that the sealing surface of the ram and the sealing surface of the valve seat are highly smooth, smooth and consistent, and fit each other, which can prevent the flow of the medium, and rely on the mold shape of the top die, spring or ram to enhance the sealing effect.

It mainly plays a severing role in the pipeline.

2.The globe valve, also known as the cut-off door, is the most widely used valve, it is widely popular, because the friction between the sealing surfaces in the opening and closing process is small, relatively durable, the opening height is not large, easy to manufacture, easy to maintain, not only suitable for medium and low pressure, but also suitable for high pressure.

3.The butterfly valve, also known as the butterfly valve, as the name suggests, is a key component that is like a butterfly facing the wind and whirling freely. The disc of the butterfly valve is a disc that rotates around an axis in the valve seat, and the size of the swing angle is the opening and closing degree of the valve.

4.The working principle of the ball valve is to make the valve open or occluded by rotating the valve. The ball valve switch is lightweight, small in size, can be made into a large diameter, reliable sealing, simple structure, easy maintenance, the sealing surface and the spherical surface are often in a closed state, not easy to be eroded by the medium, and have been widely used in various industries.

5.The plug valve relies on the plug body to rotate around the centerline of the valve body to achieve the purpose of opening and closing. Its function is to cut off, divide the fields and change the direction of the medium flow.

The structure is simple, the size is small, the operation only needs to rotate 90 degrees, and the fluid resistance is not large. Its disadvantages are that the switch is laborious, the sealing surface is easy to wear, and it is easy to get stuck at high temperatures, which is not suitable for adjusting the flow rate.

6.The check valve is a valve that automatically opens and closes by the force of the fluid itself, and its function is to prevent the medium from flowing backwards. It has many names, such as check valve, check valve, single flow door, etc. According to the structure, it can be divided into two categories.

7.The pressure reducing valve is an automatic valve that reduces the pressure of the medium to a certain value, and the pressure behind the valve is generally less than 50% of the pressure before the valve. There are many types of pressure reducing valves, mainly piston type and spring diaphragm type.

8.Steam traps, also known as steam trap drain valves, steam valves, steam traps, return boxes, return doors, etc. Its role is to automatically excrete the condensate that is constantly being produced without allowing the steam to come out.

There are many types of traps, including float type, float type, bell float type, pulse type, thermodynamic type, and thermal expansion type. Commonly used are pontoon type, bell float type and thermodynamic type.

Butterfly valves, gate valves, check valves, ball valves, globe valves.

The valve is a pipeline accessory, which is used to open and close the pipeline and control the flow of fluid medium in the pipeline. The functions of the valve in the pipeline include shut-off, regulation, diversion, backflow prevention, pressure stabilization, diversion or overflow pressure relief, etc. There are many types of valves, as the control components of fluid control systems, from the simplest butterfly valves, gate valves and other commonly used valves to the most complex automatic control system used in various valves, varieties and specifications are very large.

Butterfly valve, also known as flap valve, is a simple structure, easy to use of the control valve, the butterfly plate in the valve body of the butterfly valve is the closing part of the valve, in the shape of a disc, the working principle is that the butterfly plate rotates around the valve shaft to realize the opening and closing of the valve, under normal circumstances, the butterfly plate is driven by the valve stem, rotates 90 °, can complete a opening and closing, to achieve the purpose of interception. If the deflection angle of the butterfly plate is changed, it can also be used as a flow control. Normally, butterfly valves are often used for on/off control of low-pressure pipeline media.

The common types of valves in BAI are ball valves, needle valves, etc

DU globe valve, gate valve, check valve.

DAO, butterfly valves, flame arresters, nesting air valves, sludge discharge valves, filter valves, discharge valves, diaphragm valves, plug valves, plunger valves, balance valves, regulating valves, trap valves, solenoid valves, breathing valves, pipe pinch valves, etc.

Different media and working conditions use different valves, please choose the valve type according to the standards of the design institute. Don't choose blindly to avoid unnecessary surprises.