Description:Common sprinkle Installation:Upward or downward splashing disc Flow coefficient k:80 Sealing test pressure (MPa):3 Thread:R1/2 Remark: Pcs/ctn: 200 Packing size(cm): 40x22.5x34 ZST-15 Glass Bulb Sprinkler ZST-20 Large diameter glass bulb sprinkler ZSTD-15 Concealed glass bulb sprinkler ZSTM water curtain sprinkler ZSTMC impact crash automizing sprinkler ZSTWB centrifugal automizing sprinkler