BS ISO 3968:2017规定了评估管道压差与流量特性的程序 液压过滤器是过滤器制造商和用户之间达成协议的基础。它还规定了测量不同流速下产生的压差的方法 以及过滤器组件、旋装式过滤器和过滤器内任何阀门的相关零件的粘度 过滤水流中的水。待测试过滤器的典型类型如下:类型1:为旋装式过滤器，其中可更换单元不包括过滤器头（可能或可能） 可能不包括- 旁通阀）；类型2:为旋装式过滤器，可更换元件与过滤器头一起测试 （可能包括也可能不包括元件旁通阀）；类型3:为过滤器组件，通常为更换元件类型，即外壳（头部 和碗）和元素。交叉引用:ISO 6415:2005 Ed 3（R08）ISO 4406:2017ISO 2909:2002 Ed 3ISO 4021:1992（R08）ISO 3675:1998ISO 5598:2008 Ed 2ISO 3448:1992ASTM D4308-95ISO 2944:2000ISO 1219-1:2006ISO 9110-2:1990（R05）ISO 9110-1:1990（R05）ISO 16889:2008 Ed 2购买本文件时提供的所有现行修订版均包含在购买本文件中。

BS ISO 3968:2017 specifies a procedure for evaluating differential pressure versus flow characteristics of hydraulic filters and constitutes a basis for agreement between the filter manufacturer and user.It also specifies a method for measurement of the differential pressure generated at different flow rates and viscosities by the relevant parts of a filter assembly, spin-on and any valves contained within the filter which are in the flow stream. The typical types of filter to be tested are as follows:Type 1: which are spin-on filters in which the replaceable unit does not include a filter head (it might or might not include the element by-pass valve);Type 2: which are spin-on filters in which the replaceable element is tested together with a filter head (it might or might not include the element by-pass valve);Type 3: which are filter assembly, usually of the replacement element type, that is the housing (head and bowl) and element.Cross References:ISO 6415:2005 Ed 3 (R08)ISO 4406:2017ISO 2909:2002 Ed 3ISO 4021:1992 (R08)ISO 3675:1998ISO 5598:2008 Ed 2ISO 3448:1992ASTM D4308-95ISO 2944:2000ISO 1219-1:2006ISO 9110-2:1990 (R05)ISO 9110-1:1990 (R05)ISO 16889:2008 Ed 2All current amendments available at time of purchase are included with the purchase of this document.