Check the product during periodic maintenance and replace it if there is any abnormality, or we recommend that you replace it every 6 to 12 months for safety.
However, it is difficult to predict the time of replacement because the conditions such as fluid (composition, corrosiveness), pressure, temperature, and opening/closing frequency differ depending on the user.
It seems that there are many customers who conduct periodic inspections at an early stage, check the situation, and then, individually, decide the time of replacement.
Therefore, it is recommended that the time of replacement be decided by the customer considering various conditions.