Double port double valve fire hydrant
The double-port double-valve hydrant is a type of indoor fire hydrant. The "Code for Fire Protection Design of High-Rise Civil Buildings" stipulates that: in the following cases, when it is difficult to set two fire vertical pipes, one vertical pipe can be set, but double valves and double outlets must be used Type hydrant.
1. Unit houses of 18 floors and below;
2 Tower houses of 18 floors and below, each floor does not exceed 8 households, and the building area does not exceed 650m2.