Sprinklers Changder Pendent & Upright AHD 152F : ½”PT/NPT Ø5mm Pendent 68ºC 155ºF AHD 152U : ½”PT/NPT Ø5mm Upright 68ºC 155ºF Maximum working pressure : 12.3 kgf/cm2 Minimum operation pressure : 0.5 kgf/cm2