Giant GP7150A Specifications Model GP7155A, GP7255A, Metric, Pulley Information

Specifications

Model GP7155A, GP7255A

................................................................	U.S	Metric
Volume	65.8 GPM	250 LPM
Discharge Pressure	1500 PSI	100 Bar
Speed	2000 PSI	138 Bar
Inlet Pressure		Up to 700 RPM
Plunger Diameter	2.17”	55mm
Plunger Stroke	2.05”	52mm
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 GP7155A		Bronze
Fluid End Material GP7255A		Nickle Plated Spheroidical Cast Iron
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

GP7155A, GP7255A PULLEY SELECTION & HORSEPOWER

REQUIREMENTS

PUMP	MOTOR	RPM	GPM	800 PSI	1000 PSI	1300 PSI	1500 PSI	2000 PSI
PULLEY	PULLEY
12.75	9.00	479	45.0	25.7	32.1	41.8	48.2	64.3
12.75	9.75	531	49.9	28.5	35.6	46.3	53.5	71.3
12.75	10.75	585	55.0	31.4	39.3	51.1	58.9	78.6
12.75	11.70	638	60.0	34.3	42.9	55.7	64.3	85.7
12.75	12.75	700	65.8	37.6	47.0	61.1	70.5	94.0

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