What Is the Impact of the Fluid on the Valve?
The influences of the fluid on the valve are as follows:
Wearing
There are many factors that affect the wearing of fluid particles, such as particle sizes, content in the fluid medium, density, velocity, and the operating requirements of the valve control process. For the situation with great wear, valves should be installed one by one by the operator until a valve meeting the service life is obtained. Valve manufacturers should follow this test procedure and often offer improved internal parts of valves, which can significantly increase the service life of the valve in some cases.
Wearing caused by operation
The total number of working cycles of the valve has a great influence on the total service life of the valve. Sometimes high-pressure grinding fluids are discharged from the valve's entire stroke thousands of times a day, while other valves used for simple throttling operate only a few times, and these conditions determine the most suitable form of internals and actuators. Therefore, when purchasing a valve, you should communicate with the valve manufacturer about the number of valve opening and closing.
Internal corrosion
As conditions change, the corrosion rate also changes, which becomes a difficult problem. In most cases, it can only be solved by previously accumulated empirical knowledge. Metal alloy liners, elastomeric liners, and glass liners can be used as the interior surface of some valve structure to prevent corrosion. The user must take into account the hazard posed by slight defects in these liners and corrosion of the valve body material. Corrosion is related to the velocity of the fluid and the content of corrosive materials in the fluid. The protective film that forms on the metal surface often wears quickly, exposing the metal. In these cases, the rate of corrosion can be extremely rapid, since typical tests are performed without flow rates.
Blocking of valves
Muddy materials, sediment, compound crystallization, and heavy fouling deposits may occasionally block the valve body's flow passages, which hinder the operation of the valve. The valve body structure with smooth flow passage helps to overcome the problem. In the structure of the pressure-balanced spool, it is also possible to block the balance hole. The valve structure of the balanced spool should not be used in situations where the product is easy to precipitate and accumulate, that is, it cannot be used in situations where serious blockage may occur. Valves used for petroleum will be completely blocked by paraffin and sand entering the channel. However, the internal part of the valve can be operated freely.
Wearing
There are many factors that affect the wearing of fluid particles, such as particle sizes, content in the fluid medium, density, velocity, and the operating requirements of the valve control process. For the situation with great wear, valves should be installed one by one by the operator until a valve meeting the service life is obtained. Valve manufacturers should follow this test procedure and often offer improved internal parts of valves, which can significantly increase the service life of the valve in some cases.
Wearing caused by operation
The total number of working cycles of the valve has a great influence on the total service life of the valve. Sometimes high-pressure grinding fluids are discharged from the valve's entire stroke thousands of times a day, while other valves used for simple throttling operate only a few times, and these conditions determine the most suitable form of internals and actuators. Therefore, when purchasing a valve, you should communicate with the valve manufacturer about the number of valve opening and closing.
Internal corrosion
As conditions change, the corrosion rate also changes, which becomes a difficult problem. In most cases, it can only be solved by previously accumulated empirical knowledge. Metal alloy liners, elastomeric liners, and glass liners can be used as the interior surface of some valve structure to prevent corrosion. The user must take into account the hazard posed by slight defects in these liners and corrosion of the valve body material. Corrosion is related to the velocity of the fluid and the content of corrosive materials in the fluid. The protective film that forms on the metal surface often wears quickly, exposing the metal. In these cases, the rate of corrosion can be extremely rapid, since typical tests are performed without flow rates.
Blocking of valves
Muddy materials, sediment, compound crystallization, and heavy fouling deposits may occasionally block the valve body's flow passages, which hinder the operation of the valve. The valve body structure with smooth flow passage helps to overcome the problem. In the structure of the pressure-balanced spool, it is also possible to block the balance hole. The valve structure of the balanced spool should not be used in situations where the product is easy to precipitate and accumulate, that is, it cannot be used in situations where serious blockage may occur. Valves used for petroleum will be completely blocked by paraffin and sand entering the channel. However, the internal part of the valve can be operated freely.
