A valve is a pipeline accessory used to open and close pipelines, control flow direction, regulate and control the parameters (temperature, pressure, and flow) of the conveying medium. Valves are control components in fluid conveying systems that have functions such as cutoff, regulation, flow guidance, prevention of backflow, pressure stabilization, diversion, or overflow pressure relief. It can be said that the use of valves can be seen everywhere in every aspect of our lives. There are many types of valves, and understanding their functions and functions can help us better understand them. Below, the editor will introduce the functions and functions of valves?
1、 What are the functions of valves?
(1) Cut off: Almost all valves have a cut-off function. If it is only used for cutting off without adjusting the flow rate, gate valves, ball valves, etc. can be selected. When quick cutting is required, cocks, ball valves, butterfly valves, etc. are more suitable. The shut-off valve can both adjust the flow rate and cut off. Butterfly valves are also suitable for regulating large flow rates.
(2) Changing the flow direction: By using a two way (L-shaped channel) or three-way (T-shaped channel) ball valve or plug, the material flow direction can be quickly changed. Moreover, since one valve acts as two or more direct valves, the operation can be simplified, making the switching accurate and reducing the space occupied.
(3) Control: Globe valves and plunger valves can meet general flow regulation, while needle valves can be used for fine adjustment in small amounts; It is advisable to use a throttle valve for stable adjustment (pressure, flow) in a larger flow range.
(4) Check valve: To prevent material backflow, a check valve can be selected.
(5) Valves with additional functions can be selected for different production processes, such as valves with jackets, discharge ports, and bypass, as well as valves with blowing ports to prevent solid particle settling.
2、 What are the functions of valves?
The function of valves is actually based on the type of valve used.
1. A safety valve is a valve that prevents the pressure of the medium from exceeding the specified value and plays a safety role.
2. Vacuum includes vacuum ball valves, vacuum baffle valves, vacuum inflation valves, pneumatic vacuum valves, etc. Its function is to change the direction of air flow, adjust the size of air flow, and cut off or connect the vacuum system components in the vacuum system, which are called vacuum valves
3. Shutoff valve
This type of valve has an opening and closing function. Permanent on the inlet and outlet of cold and heat sources, equipment inlet and outlet, and pipeline branch lines (including risers), it can also be used as a drain valve and a vent valve. Common shut-off valves include gate valves, globe valves, ball valves, and butterfly valves.
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