Valves are common devices in the field of fluid control and are used to control the flow of fluids. According to their structure and function, valves can be divided into many types. The following is the Tianjin valve manufacturer to introduce the structure and classification of the valve:
First, the valve structure:
1. Valve body: the main part of the valve, responsible for fixing and supporting other components.
2. Valve disc (disc) : The part that controls the opening and closing of the valve for fluid flow.
3. Valve seat: with the disc to form a seal, control fluid on and off.
4. Sealing surface: the contact surface between the valve disc and the seat, through the sealing surface to achieve the sealing performance of the valve.
5. Rod shaft: connected with the valve disc to transfer the operating force and control the opening and closing of the valve.
6. Operating device: used to control the valve switch, can include manual operation device, electric device, pneumatic device, etc.
Second, the classification of valves:
1. Classification according to structural form:
- Catalog valves: the disc or disc moves up and down the axis in a straight line, such as globe valves, check valves, etc.
- Plug valve: the disc or disc rotates around the axis, such as ball valves, butterfly valves, etc.
- High resistance valve: Add narrow channels in the valve to increase the resistance of fluid flow, such as throttle valves, gate valves, etc.
2. Classification by use:
- Stop valve: used to control fluid on and off, such as stopping fluid flow or regulating fluid.
- Check valve: used to prevent the backflow of the fluid, to prevent the flow of the reverse.
- Regulating valve: used to regulate the flow rate, pressure or temperature of the fluid.
- Safety valve: used to release pressure when the pressure exceeds the set value to avoid damage to equipment or pipelines.
- Exhaust valve: used to remove gas from the pipeline to ensure the normal operation of the fluid.
3. According to the use of media classification:
- Water valve: used to control water flow, such as water supply valve, drainage valve, etc.
- Gas valve: used to control gas flow, such as gas regulating valve, pneumatic ball valve, etc.
- Oil valve: used to control oil flow, such as hydraulic control valve, oil seal valve, etc.
- Steam valve: used to control steam flow, such as steam regulating valve, steam force valve, etc.
4. Categorize by stress level:
- Low pressure valve: suitable for low pressure working environment, generally less than 1.6MPa.
- Medium pressure valve: suitable for medium pressure working environment, generally between 1.6MPa and 10MPa.
- High pressure valve: suitable for high pressure working environment, generally greater than 10MPa.
The above is the structure and classification of the valve. When choosing the right valve, it is necessary to comprehensively consider the specific engineering needs and media characteristics, and select a high-quality valve manufacturer to ensure the reliability and service life of the valve. For more detailed consultation and guidance, it is recommended to contact professional valve manufacturers.
China Tianjin valve manufacturers
Post time: Jul-21-2023
