Fi ġenerali pressjoni baxxa apparat bi pressjonijiet taħt 140kg/cm2, it is common to only install suction filters, but reflux filters and air filters should also be installed.
Fi ġenerali medju u għoli pressjoni likwidu apparati b a pressjoni fuq 140kg/cm2, a reflux filtru is komunement użat biex kontroll tniġġis konċentrazzjoni. But meta hemm speċjali rekwiżiti for affidabbiltà, pressjoni għolja pipeline filtri filtri għandhom ukoll be użati.
Biex iżżid l- affidabilità ta ' elettromanjetiċi proporzjonali kontroll valvi jew żgħar fluss aġġustament valvi, terminal filtri għandhom ikunu installati.
Meta tuża servo valves, efforts should be made to reduce the pollution concentration of the system. Therefore, high-pressure and reflux filters should be used simultaneously; When in high capacity, a circulation filter should be installedt, and a terminal filter għandu be be installa one installa on the auxiliary pipeline.
