Eastman TEFT Engineering [P] Ltd. Supplies Constant Flow Radial Piston Pump. Eastman TEFT Engineering [P] Ltd. Offers pumps and connectors. Constant Flow Radial Piston Pump is used for the low and high capacity range. Constant Flow Radial Piston Pump is specially designed up to 1000 bar. The pressure of this pump is up to 630 bar and its capacity is 1200 l/min.