BS EN 16712-4:2018适用于膨胀率大于 200:1，其唯一外部电源是供水系统的压力和/或流量 装置这是消防和救援机构使用的，包含其规范和测试程序。交叉引用:ISO 14120:2015ISO 12100:2010EN ISO 13857:2008ISO 13857:2008EN 1568-2:2008CEN/TS 15989:2015EN ISO 12100:2010ISO 7000:2014EN 16712-2:2015IEC 61310-2:2007EN ISO 14120:2015EN 61310-2:2008EN 1568（所有部分）EN 16712-192/58/EEC2006/42/ECEN 16712- 3购买本文件时提供的所有现行修订均包含在购买本文件中。

BS EN 16712-4:2018 applies to high expansion foam generators, having an expansion ratio greater than 200:1, whose only source of external power is the pressure and/or flow of the water supply to the device. This is used by fire and rescue services and contains their specification and test procedures.Cross References:ISO 14120:2015ISO 12100:2010EN ISO 13857:2008ISO 13857:2008EN 1568-2:2008CEN/TS 15989:2015EN ISO 12100:2010ISO 7000:2014EN 16712-2:2015IEC 61310-2:2007EN ISO 14120:2015EN 61310-2:2008EN 1568 (all parts)EN 16712-192/58/EEC2006/42/ECEN 16712-3All current amendments available at time of purchase are included with the purchase of this document.