These filters are connected to the pressure line to protect the system's components against contaminant particles. The standard filters are fitted with a bypass valve calibrated at 6 bar. For applications which need maximum protection of the system, such as servo and proportional controls, the filters are equiped with highly resistant filtering elements ("HC version" - high collapse pressure) and are not fitted with a bypass. Degree of filtration = 3ʮm, 6ʮm, 10ʮm & 25ʮm Max. Working Pressure: 280 bar Ports Avail: 1/2" to 1" BSPP As a guide choose a strainer to have 2 times the maximum pump flow rate.