More than 7 storey residential indoor hydrant system should be set up, when there are difficulties, can only set the dry fire standpipe and without fire hydrant box DN65 fire hydrant. Fire standpipe diameter should not be less than DN65.
Dry fire hydrant, usually indoor fire hydrant, because the conditions are limited, can not guarantee water in the fire hydrant, dry. This set of fire hydrant, fire, fire by car or motor fire pump can pump adapter to provide fire protection water dry standpipe.
Did not hear of this kind of thing, Louzhu remember the name of it, fire hydrant is only indoor and outdoor, ground, underground, regardless of dry and wet. Only Caifen wet automatic sprinkler system.
