Giant GP7255AGB Water Pump User Manual


 
U.S. ...............................(Metric)
Volume (Continuous).............................................................. 65.8 GPM .....................(250 LPM)
Volume (Intermittent) ............................................................. 80 GPM* ......................(303 LPM)*
Discharge Pressure (Continuous) ........................................... 1500 PSI .......................(100 bar)
Discharge Pressure (Intermittent) ........................................... 2000 PSI .......................(140 bar)*
Speed (Continuous) ........................................................................................................700 RPM
Speed (Intermittent) ........................................................................................................851 RPM
Inlet Pressure (maximum) ...................................................... 145 PSI .........................(10 bar)
Plunger Diameter .................................................................... 2.17” .............................55mm
Plunger Stroke ........................................................................ 2.0” ...............................52mm
Crankshaft Diameter............................................................... 1.9” ...............................48mm
Key Width............................................................................... 0.6” ...............................14mm
Crankshaft Mounting ......................................................................................................Either side
Shaft Rotation .................................................................................................................See Instructions on page 2
Temperature of Pumped Fluids .............................................. Up to 140
o
F..................(60
o
C)
Inlet Ports........................................................................................................................(2) 2-1/2" NPT
Discharge Ports...............................................................................................................(2) 1-1/4" NPT
Weight..................................................................................... 455 lbs. .........................(206 kg)
Crankcase Oil Capacity .......................................................... 1.6 Gal. .........................(6.0 liter)
Fluid End Material..........................................................................................................Spheroidical Cast Iron
Specifications
Model GP7255AGB-2.4
Consult the factory for special requirements that must be met if the pump is to
operate beyond one or more of the limits specified above.
PULLEY INFORMATION
Pulley selection and pump speed are based on a 1725
RPM motor and "B" section belts. When selecting
desired GPM, allow for a ±5% tolerance on pumps
output due to variations in pulleys, belts and motors
among manufacturers.
1. Select GPM required, then select appropriate
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.
HORSEPOWER INFORMATION
Horsepower ratings shown are the power require-
ments for the pump. Gas engine power outputs must
be approximately twice the pump power require-
ments shown above.
We recommend that a 1.1 service factor be specified
when selecting an electric motor as the power source.
To compute specific pump horsepower requirements,
use the following formula:
(GPH X PSI) / 1450 = HP
* Intermittent Duty Only!
6
Input RPM
RPM GPM 800 PSI 1000 PSI 1300 PSI 1500 PSI
2000 PSI
*
1150
479 45.0 25.7 32.1 41.8 48.2 64.3
1274
531 49.9 28.5 35.6 46.3 53.5 71.3
1404
585 55.0 31.4 39.3 51.1 58.9 78.6
1531
638 60.0 34.3 42.9 55.7 64.3 85.7
1680
700 65.8 37.6 47.0 61.1 70.5 94.0
2042 851 80.0* 45.7 57.1 74.3 85.7 114.3
GP7255AGB-2.4 PULLEY SELECTION & HORSEPOWER
REQUIREMENTS