BS ISO 4548-6:2021 pdf download – Methods of test for full-flow lubricating oil filters for internal combustion engines Part 6: Static burst pressure test

BS ISO 4548-6:2021 pdf download – Methods of test for full-flow lubricating oil filters for internal combustion engines Part 6: Static burst pressure test This document specifies a method of testing full‐flow lubricating oil filters for internal combustion engines to determine their ability to withstand a static pressure objective and to determine their burst pressure and the failure mode concerned. It does not apply to filters for use in aeronautical applications or plastic components. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 4548‑1, Methods of test for full-flow lubricating oil filters for internal combustion engines — Part 1:Differential pressure/flow characteristics 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 4548‑1 apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: — ISO Online browsing platform: available at https://www.iso.org/obp — IEC Electropedia: available at http://www.electropedia.org/ 4 Test rig Figure 1 shows a circuit diagram of a typical hydraulic test stand that can be used for this procedure. Hydraulic hand pump or other appropriate technology, with high‑pressure tubing and valves, pressure gauge with measuring range of 0 kPa to 3 000 kPa or higher. A transparent safety shield shall be used. 6.1.5 Raise the pressure gradually to 200 kPa, maintainfor about 1 min, and check the filter and all fittings for leaks. NOTE The first pressure increment can be 50 % of the specified objective pressure, if it is judged to be safely attainable. 6.1.6 Now raise the pressure at a controlled pressure ramp up to approximately 100 kPa per 10 s and maintain for approximately 15 s and check filter for leaks or distortion. 6.1.7 Continue raising the pressure at approximately 100 kPa per 10 s intervals with a 15 s check until a specified [see 7 g)] pressure objective is reached as determined by the customer, or otherwise failure occurs. 6.1.8 Relieve the pressure to zero. Check the filter for permanent distortion and tightening torque or angle of rotation. 6.1.9 Take note of the remaining tightening torque or angle of rotation. If loosening has occurred, restore the initial value prior to determination of the...