Giant Specifications Model GP7150A, GP7150A PULLEY SELECTION & HORSEPOWER REQUIREMENTS, Metric

Specifications

Model GP7150A

................................................................	U.S	Metric
Volume	54.5 GPM	206 LPM
Discharge Pressure	1900 PSI	131 Bar
Speed		700 RPM
Inlet Pressure	140 PSI	10 Bar
Plunger Diameter	1.97”	50mm
Plunger Stroke	1.89”	48mm
Crankshaft Diameter	1.89”	48mm
Key Width	0.55”	14mm
Crankshaft Mounting		Either side
Shaft Rotation		Top of pulley towards manifold
Max.Temperature of Pumped Fluids	140 oF	60 oC
Inlet Ports		(2) 2-1/2" NPT
Discharge Ports		(2) 1-1/4" NPT
Weight	374 lbs	170 kg
Crankcase Oil Capacity	1.6 Gal	6.0 liters
Fluid End Material		Bronze
Mechanical Effecency @ 700 RPM		0.83
Volumetric Effecency @ 700 RPM		0.96

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

GP7150A PULLEY SELECTION & HORSEPOWER REQUIREMENTS

PUMP	MOTOR	RPM	GPM	800 PSI	1000 PSI	1300 PSI	1500 PSI	1900 PSI
PULLEY	PULLEY
12.75	5.75	300	23.4	13.4	16.7	21.7	25.1	31.8
12.75	7.50	400	31.2	17.8	22.3	29.0	33.4	42.3
12.75	9.25	500	38.9	22.2	27.8	36.1	41.7	52.8
12.75	11.00	600	46.7	26.7	33.4	43.4	50.0	63.4
12.75	12.75	700	54.5	31.1	38.9	50.6	58.4	74.0

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