(2) flow characteristic filter element is an important parameter of flow characteristic through the flow rate and pressure drop of oil. The flow characteristic test should be conducted according to iso3968-91 standard to draw the flow-pressure drop characteristic curve. Under the rated oil supply pressure, the total pressure drop (the sum of filter shell pressure drop and filter core pressure drop) should generally be less than 0.2MPa.
　　(3) the strength of filter element should be tested according to iso2941-83 standard for rupture and impact resistance. The pressure difference of sharp drop when the filter element is damaged should be greater than the specified value.
　　(4) the fatigue test of 100,000 cycles should be carried out according to iso3724-90.
　　(5) the hydraulic oil strain test should be carried out according to iso2943-83 standard pressure flow bearing test, to verify the compatibility of the filter material to hydraulic oil.
　　This article is organized by dongguan oneness filtration technology co., LTD