... ’’ (203.2mm)Gear Ratio: 5.619 : 1Fluid EndPlunger diameter: 3 3/4’’(95.25mm); 4’’(101.6mm); 4 1/2’’(114 ... (LPM)PSI(Kg/cm2)GPM(LPM)PSI(Kg/cm2)3 3/4’’(95.25)115(435)10,500(738)172( ... (1237)4,250(298)392(1483)3,540(248)4 1/2’’(114.3)165(624)7,500(527)248( ... 5,598(393)330(1249)4,192(294)413(1563)3,350(235)496(1877)2,799(196)5’’(127)204( ... ,000(421)306(1158)4,525(318)408(1544)3,394(238)510(1930)2,712(190)612(2316) ...