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Inlet Por. ............................................................................................ 1-1/2" NP. Discharge Por. ................................................................................... 1" NP. Crankshaft Mountin. ......................................................................... Either Sid. Shaft Rotatio. .................................................................................... Top of Pulley Towards Fluid En. Weight................................................................................................ 116 lbs. Crankshaft Diameter.......................................................................... 35 m. Valve Casing - LP122. ..................................................................... Aluminum Bronz. Valve Casing - LP12. ........................................................................ Bras. Valve Casing - LP122A-400. ............................................................ 303 S.S. Valve Casing - LP122A-310. ............................................................ Aluminum Bronze-Nickl. Volumetric Efficiency @ 800 RPM................................................... 0.9. Mechanical Efficiency @ 800 RPM.................................................. 0.8. PULLEY INFORMATION HORSEPOWER INFORMATION Pulley selection and pump speed are based on a 1725 We recommend that a 1.1 service factor be specified RPM motor and "B" section belts. When selecting when s electing an electric motor as the power source. desired GPM, allow for a ±5% tolerance on pumps To compute specific pump horsepower requirements, output due to variations in pulleys, belts and motors use the following formula: among manufacturers. 1. Select GPM required, then select appropriate HP = (GPM X PSI) / 1440 motor and pump pulley from the same line. 2. The desired pressure is achieved by selecting the correct nozzle size that corresponds with the pump GPM. Pump speeds of 640 RPM and above require a minimum inlet pressure of 12 psig. Pump speeds of 805 RPM and above require a minimum inlet pressure of 14 psig. LP122A SERIES/LP123 PULLEY SELECTION AND HORSEPOWER REQUIREMENTS GPM PUMP PULLEY MOTOR PULLEY RPM 600 PSI 800 PSI 1000 PSI 1300 PSI 2000 PSI* 22.3 12.75" 3.95" 500 9.6 12.7 15.9 20.7 31.9 24.7 12.75" 4.35" 555 10.6 14.1 17.6 22.9 35.3 28.5 12.75" 4.95" 640 12.2 16.3 20.4 26.5 40.7 30.9 12.75" 5.35" 695 13.2 17.7 22.1 28.7 44.1 33.4 12.75" 5.75" 750 14.3 19.1 23.9 31.0 47.7 35.6 12.75" 6.15" 800 15.3 20.3 25.4 33.1 50.9 39.4 . 12.75" 6.50" 885 16.9 22.5 28.1 36.6 56.3 *Intermittent duty only! - Consult factory! Specifications Model LP255 Volum. ............................................................................................... Up to 26.0 GPM (147.6 l/m. Discharge Pressur. ............................................................................ Up to 2200. Inlet Pressur. ..................................................................................... Up to 90 PS. Spee. ................................................................................................. Up to 1000 RP. Plunger Diamete. ............................................................................... 32 m. Strok. ................................................................................................. 42 m. Crankcase Oil Capacit. ..................................................................... 116 fl.oz. Temperature of Pumped Fluid. ......................................................... Up to 160o. Inlet Por. ............................................................................................ 1-1/2" NP. Discharge Por. ................................................................................... 1" NP. Crankshaft Mountin. ......................................................................... Either Sid. Shaft Rotatio. .................................................................................... Top of Pulley Towards Fluid En. Weight................................................................................................ 116 lbs. Crankshaft Diameter.......................................................................... 35 m. Valve Casing - LP122. ..................................................................... Aluminum Bronz. Valve Casing - LP123/LP25. ............................................................ Bras. Valve Casing - LP122A-400. ............................................................ 303 S.S. Valve Casing - LP122A-310. ............................................................ Aluminum Bronze-Nickl. Volumetric Efficiency @ 800 RPM..............................................

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