Giant MP Series Operating Instructions/ Repair And Service Manual page 3

MP SERIES - PUMP SPECIFICATIONS
U.S. Measurements
Max.
Flow
Model GPM
MP4120 8.9
MP4124 12.8
MP4135 13.5
MP4130 15.4
MP4130HK 15.4
MP4126 17.9
Metric Measurements
Max.
Flow
Model L/min
MP4120 33.8
MP4124 48.6
MP4135 51.2
MP4130 58.2
MP4130HK 58.2
MP4126 67.7
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.
Horsepower Ratings:
We recommend a 1.15 service factor be specified when selecting an electric motor as the power source.
To compute electric motor horsepower required, use the following formula:
The formula to determine the horsepower required for a gas engine is: HP = (GPM X PSI) / 1150.
For the Application of a Hydraulic Motor:
To Determine the Torque of a Hydraulic Motor -- (GPM x PSI x 36.77) / RPM = Torque (in-lbs)
Calculating RPM / GPM of Pump:
A pump must be connected to an electric motor or gas or diesel engine with the correct ratio of pulleys
and belts to attain the required speed and GPM. The use of a Variable Frequency Drive (VFD) may also
be used to control the RPM of a properly sized electric motor when variable flows are required.
(Max. Pump RPM / Rated Pump GPM) x Required Pump GPM = Required Pump RPM
To calculate a pulley diameter one (1) pulley diameter and the required pump RPM must be known:
(Pump RPM x Pump Pulley Diameter) / Motor RPM = Motor Pulley Diameter
(Motor RPM x Motor Pulley Diameter) / Pump RPM = Pump Pulley Diameter
Common Specifications:
Inlet Pressure ........................ 145 PSI (10 Bar)
Crankshaft Diameter.............. 1.10" (28 mm)
Crankcase Oil Capacity ......... 33.8 fl. oz. (1 L)
Inlet Ports .............................. (2) 1" NPT
Discharge Ports ..................... (2) 3/4" NPT
Stroke (except MP4126) ........ 1.02" (26 mm)
Stroke (MP4126 only) ............ 1.18" (30 mm)
Weight ................................... 66 lbs (30 kg)
Shaft Rotation............Top of Pulley Toward Fluid End
Max. Pres- Max.
sure Speed
PSI RPM
3625 1450
2610 1450
1885 1100
1600* 1100
1600 1100
1600 1100
Max. Pres- Max.
sure Speed
bar RPM
250 1450
180 1450
130 1100
110* 1100
110 1100
110 1100
Power Max.
Required Temperature
HP °F
23.1 160
24 160
18.2 160
17.6 160
17.6 195
20.4 160
Power Max.
Required Temperature
kW °C
17.2 70
17.9 70
13.6 70
13.1 70
13.1 90
15.2 70
Materials Used for MP Pumps:
Manifold ........ Aluminum Bronze
Plungers ....... Solid Ceramic Oxide
Valves ........... High Grade Stainless Steel
Seals............. Nitrile with Fabric Reinforcing
Gear End ...... Spheroidal Cast Iron
3
Plunger NPSH Re-
Diameter quired
in Ft-Head
0.787 24.6
0.945 27.9
1.1 29.5
1.18 29.5
1.18 N/A
1.18 N/A
*Intermittent rating of 2000 PSI
Plunger NPSH Re-
Diameter quired
mm mWs
20 7.5
24 8.5
28 9
30 9
30 N/A
30 N/A
*Intermittent rating of 140 bar
HP = (GPM X PSI) / 1450.