阀门标准 AS 1357.1-2009 Valves primarily for use in heated water systems – Part 1 Protection valves.pdf [db:摘要]
阀门标准 BS 1212-3-1990 Float operated valves. part 3 Specification for diaphragm type float operated valves (plastics bodied) for coldwater services only.pdf [db:摘要]
