... ,upright,sidewall 2.Material:Brass or Zinic alloy. 3.Size:1/2" 3/4" automatic fire sprinkler1. Sprinkler material: Bronze or zinic alloy2 ... . Sprinkler thread: 1/2",3/4"3. Flow coefficient: 80+-44 ... , Upright, Pendent, Sidewall upright, Sidewall horizionalSidewall pendent and so on. automatic fire sprinkler