Product Information Material: Cast Brass Inlet: 2-1/2" grooved Outlet: 2-1/2" grooved Select a Product Part NumberDescription NAPRAVGT250-55Calculated setting: 55 NAPRAVGT250-80Calculated setting: 80 NAPRAVGT250-75Calculated setting: 75 NAPRAVGT250-95Calculated setting: 95 NAPRAVGT250-70Calculated setting: 70 NAPRAVGT250-65Calculated setting: 65 NAPRAVGT250-60Calculated setting: 60 NAPRAVGT250-85Calculated setting: 85