Pneumatic ball valves are familiar to everyone, and their main function is to cut off fast, distribute and change the flow direction of the medium. Next, the editor will give you a brief talk about its characteristics in practical applications, and I hope it will be helpful to everyone.
1. The fluid resistance is small, and its resistance coefficient is equal to that of a pipe section of the same length.
2. Simple structure, small size and light weight.
3. It is tight and reliable. At present, the sealing surface material of the ball valve is widely used in plastics with good sealing performance, and it has also been widely used in vacuum systems.
4. Easy to operate, fast opening and closing, only need to rotate 90° from fully open to fully closed, which is convenient for remote control.
5. Convenient maintenance, simple structure of pneumatic ball valve, generally movable sealing ring, easy to disassemble and replace.
6. When fully open or fully closed, the sealing surface of the ball and the valve seat is isolated from the medium. When the medium passes, it will not cause erosion of the valve sealing surface.
7. It has a wide range of applications, with a diameter ranging from a few millimeters to a few meters, and can be applied from high vacuum to high pressure.
8. Because the pneumatic ball valve power source uses gas, the pressure is generally 0.2-0.8MPa, which is relatively safe. If the pneumatic ball valve leaks, compared to hydraulic and electric, the gas can be discharged directly, which does not pollute the environment and has high safety.
9. Compared with manual and turbine rotating ball valves, pneumatic ball valves can be configured with large diameters.
Precautions for valve care
Valve is not particularly unfamiliar to us, after all, he is also seen in our lives. Next, the editor will give you a brief talk about the cleaning and assembly of the valve, and I hope it will be helpful to you.
Cleaning steps
Valve parts must go through the following process before assembly:
1. According to the processing requirements, some parts need to be polished, and the surface must not have processing burrs, etc.;
2, all parts are degreased;
3. After degreasing is completed, pickling passivation is carried out, and the cleaning agent does not contain phosphorus;
4. Rinse with pure water after pickling and purification, and there should be no residues of chemicals. This step is omitted for carbon steel parts;
5. Dry the parts one by one with a non-woven fabric, and do not leave the surface of the parts such as wire bristles, or blow dry with clean nitrogen;
6. Use non-woven fabric or precision filter paper dipped in analytical pure alcohol to wipe each part until there is no dirty color.
Assembly requirements
The cleaned parts must be sealed and stored for installation. The requirements for the installation process are as follows:
1. The installation workshop must be clean, or a temporary clean area must be constructed, such as newly purchased color striped cloth or plastic film, to prevent dust from entering during the installation process.
2. Assembly workers must wear clean cotton overalls, cotton caps on their heads, no leakage of hair, clean shoes on their feet, and plastic gloves on their hands, degreasing.
3. Assembly tools must be degreased and cleaned before assembly to ensure cleanliness.
