Steller vertical in-line fire pumps steller vertical in-line fire pumps offer a simple alternative to horizontal split case pumps in fire applications with lower flow ranges. Their unique design minimizes energy consumption whilst long service life. These fire pumps are easy to install for existing pipelines. With the inlet and outlet on a common centerline, only standard piping supports on either side of the pump are required. This eliminates the need for costly foundations or pads. The precision-cast impeller is dynamically balanced for smooth operation, and it is enclosed for optimum performance and long service life. Balance holes on the backside of the impeller reduce thrust with hydraulic balancing of the pressures. Available product range30 gpm to 500 gpmdelivery head 2 bar to 12 bar (2.8 -162m)power220380v3 phase 6050hz