ISO 14085-4:2015描述了一种验证航空航天液压流体动力过滤器滤芯的塌陷/破裂压力额定值的方法。这表示滤芯在正常（预期）流动方向上承受指定压差的能力，该压差是由污染液体流经滤芯产生的，直到发生坍塌/破裂或达到最大预期压差而不会出现滤芯故障。 塌陷/破裂压力试验可与根据ISO 14085-3中规定的程序进行的效率试验同时进行，方法是继续注入污染物，直到达到指定的滤芯压差。 ISO 14085-4:2015无意在重复使用条件下鉴定滤芯；这只能通过为此目的制定的特定测试协议来实现，包括实际使用条件，例如工作流体或污染物。 应用ISO 14085本部分得出的试验数据可用于比较航空航天液压滤芯的性能。

ISO 14085-4:2015 describes a method for verifying the collapse/burst pressure rating of an aerospace hydraulic fluid power filter element. This represents the capability of a filter element to withstand a designated differential pressure in the normal (intended) direction of flow, created by flowing contaminated fluid through the filter element until either collapse/burst occurs or the maximum expected differential pressure is reached without element failure. The collapse/burst pressure test can be conducted in conjunction with an efficiency test performed according to the procedure defined in the ISO 14085-3 by continuing the contaminant injection until the designated filter element differential pressure is reached. ISO 14085-4:2015 is not intended to qualify a filter element under replicate conditions of service; this can only be done by a specific test protocol developed for the purpose, including actual conditions of use, for example the operating fluid or contamination. The tests data resulting from application of this part of ISO 14085 can be used to compare the performance of aerospace hydraulic filter elements.