Method for extending the service life of valve core


Extending the lifespan of ceramic valves by cleaning pipelines

In the pipeline system, there may be some impurities, such as welding slag, rust, solidified slag of lime slurry, iron wire, cloth strips, etc. These pollutants are distributed at the throttle and guide parts, which are easily causing pipeline blockage or valve blockage, causing the valve core to break. These common faults usually occur during the initial stage of operation of newly commissioned systems and after major repairs. In such cases, the valve must be disassembled and cleaned to remove debris. If the sealing surface is damaged, it should also be ground; At the same time, open the bottom plug to flush out debris and flush the pipeline. Before putting into operation, fully open the regulating ball valve and allow the medium to flow for a period of time before putting it into normal operation.

Extend service life by increasing opening operation

Try to work at the maximum opening when starting to use ceramic control valves, such as 80%. In this way, after removing impurities from the pipeline, adjust the opening of the regulating valve to a slightly larger position than normal. As the fluid damages the valve core, the flow rate increases and the opening decreases accordingly. By continuously damaging and gradually closing the valve, the entire valve core is fully utilized until the root and sealing surface of the valve core are damaged and cannot be used.

Increase lifespan by increasing aperture

By using the CV value calculation formula, we can calculate the correct CV and select the appropriate valve diameter. Under the same flow rate, the smaller the valve diameter, the faster the fluid flow rate, and the more severe the erosion of the medium on the valve core and sealing components. If the valve diameter is appropriately increased within the freely adjustable range of opening, wear can be reduced.

Improving lifespan by transferring damaged locations

In order to protect the sealing and throttling surfaces of the valve core and valve seat, we can transfer the severely damaged areas to secondary positions. The ceramic regulating ball valve has the most severe erosion, and the place with the fastest fluid velocity is below the fluid inlet. The current ceramic regulating ball valve mainly adopts a three piece structure, and we can reverse the use of the ball core. One ball core can be used four times at the inlet, which can extend the service life of the valve by four times.

Improving service life by changing valve structure

The ceramic regulating ball valve adopts a three piece structure, with dual valve seats and double sealing characteristics. When selecting ceramic regulating ball valves, it is best to choose valves with inclined transition design, which can reduce fluid impact and prolong service life.