How to test pleated filters

The pleated filter element is a relatively fine filter element in the series of pleated filter elements. It belongs to the filter element of sterilization grade and high hygiene standard. The requirements of its use are relatively high, so the integrity inspection needs to be carried out before leaving the factory to ensure that each product is sent to the factory. The PES pleated filter elements are all in line with the needs of customers. The following is the integrity inspection of the PES pleated filter elements. The integrity inspection of the filter element is an experiment used to detect parameters such as the dispersion flow and the bubble point of the filter element. The experiment has the advantages of convenient detection and good reliability. The hydrophilic membrane filter element is tested with pure water, and the hydrophobic membrane filter element is tested with 60% IPA. Before using the automatic integrity tester, please confirm the accuracy of the integrity tester, check the air tightness of the filter, and check whether the intake pressure can meet the requirements (the central intake pressure is set at 5-7bar), and check The temperature was set at 20-25°C. Components: filter, pressure gauge, combined joint, clean air source, liquid pump, water tank (solvent tank), pipe fittings, etc. Operation steps: Wetting process (the parameters mentioned below are the setting parameters of the hydrophilic membrane 0.2um filter element as an example) to complete the connection; block the valve, open the valve and the exhaust valve, open the water pump, and dispatch the valve 4. After the water is discharged from the exhaust valve Block the exhaust valve, and initially stop the flushing of the filter element. Completely open the valve, flush quickly for 5 to 10 seconds, adjust the valve, control the pressure of the pressure gauge 1 to show about P1u003d4-4.5bar, according to the flow rate of more than 5L/min per 10The greater the flow rate, the longer the time, the easier it is to get wet, and the more accurate the test results are.

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