ASTRA Dry Pipe Valve Prepack Trim “GALAXY” 3″ ASTRA DPV GALAXY 4″ ASTRA DPV GALAXY Astra Dry Pipe Valves data sheets ASTRA Alarm Valve Prepack Trim “GALAXY” (with excess pressure pump) 4″ Alarm Valve Mod. E w/EPP 1/3 HP (AVE) 6″ Alarm Valve Mod. E w/EPP 1/3 HP (AVE) 8″ Alarm Valve Mod. D w/EPP 1/2 HP (AVD) Astra Wet Alarm Valve data sheets