650939-X4D-B 2.4:1 Ratio, 4.125 sq in hydraulic 4.4 GPM (16.7 LPM) max flow 650943-X4X-B 0.58:1 Ratio, Hydraulic 3.1 GPM (11.9 LPM) max flow 650940-XXD-B 0.8:1 Ratio, 4.125 sq in hydraulic 12.9 GPM (48.8 LPM) max flow 650944-XXX-B 3.3:1 Ratio, 2.062” 2 Hydraulic 1.6 GPM (6.1 LPM) max flow