أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
shall not less than 150 mm connected with ZCV upto 300 sprinklers
Refering to NFPA13 , Wet riser size shall not be less than150mm connected with a Zone control valve upto300 Sprinklers.
riser shall be2 No.