BS 1212-3-1990 Float operated valves. part 3 Specification for diaphragm type float operated valvesBS 1212-3-1990 Float operated valves. part 3 Specification for diaphragm type float operated valves (plastics bodied) for coldwater services only
部份国外标准涉及版权问题,所以全部国外标准于2013年02月,全部删除!相关页面仅提供参考消息。