1.5 INCH VIKING GEAR PUMP Stock Number: P-2341 Mfg. Viking Pump Model HL124a Nominal rating 30 gpm @ 1800 rpm, to 400 psi 7500 ssu, to 300 deg. F. Packed seal 1.5 inch in and out cast iron construction. (1) available Posted in Pump, Displacement and Gear.