Product No. : DSTU-100 
Model recognition No. : SONG 16-6 
Technology & Certification : ISO 9001 : 2008 / ISO 14001 : 2004 
Etc :  
 
F Type Standpipe(Exposed 100mm) which can be used outside of the building is a built-in type of check valve as a structure which can connect both sides during use. 

As a purpose of use, the nameplate of indoor hydrant standpipe, sprinkler standpipe, link watering standpipe, link water supply standpipe, sprinkler & indoor hydrant standpipe should be marked. Also, the large size name plate which is marked by use can be used in case of installing the standpipe for several uses at one place.