What Impact Will the Fluid Have on the Valve?

What Impact Will the Fluid Have on the Valve?


Scouring
Many factors that affect the scouring of the fluid particle, such as particle sizes, content, density and velocity in the fluid medium. For places with easy wear, the optimal valve is determined by the equipment operator, and it is only necessary to install the valves one by one until a certain service life of the product is met. Valve manufacturers should follow this test procedure and often to offer improve the internal parts of valves, which can significantly increase the service life of the valve in some cases.
 
Wear 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 abrasive 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. These conditions determine the most suitable form of internal parts and actuators. Therefore, when purchasing a valve, you should communicate with the valve manufacturer about opening and closing times of valves.
 
Internal corrosion
As conditions change, the corrosion rate also changes, which becomes a difficult problem. In most cases, the problem 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 structures 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 new metal. In these cases, the rate of corrosion can be extremely rapid since typical tests are performed without flow rates.
 
Blocking of valves
Sludge, sediment, compound crystallization, and many fouling deposits may occasionally block the valve body’s flow path, preventing the operation of the valve in this case. The valve body with a smooth flow path and few dead angles helps overcome the problems. In the structure of the pressure-balanced spool, it is also possible to block the balance hole. 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. Disassemble the valve for petroleum, it is completely blocked by paraffin and sand entering the channel. However, the balance part of the internal part can be freely operated.