Do fire hydrants need valves?
Generally speaking, outdoor fire hydrant should have a valve well, and it is recommended to install one to facilitate future maintenance. Moreover, according to the specifications, more than 5 fire hydrants, both between the pipe and the ring, are required to install valves. Specific reference to the national standard "01S201 outdoor fire hydrant installation", fire hydrant installation plans, are to be controlled by the gate valve.
A single outdoor hydrant can not be equipped with valves. According to the specifications, more than 5 fire hydrants, both the limbs and the pipes, need to be fitted with valves.
According to standard drawing, most of them have valve well, or disturbed valve. Designer fix.
