[国外标准] JIS B8410-2009 Pressure reducing valves for water works(Amendment 1)
[国外标准] JIS B8410-2004 Pressure reducing valves for water works
[国外标准] JIS B8410-2011 水道用減圧弁
[国外标准] JIS B8410-2010 水管用减压阀(修改件2)