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P221A HORSEPOWER REQUIREMENTS
RPM GPM 1000 PSI 1500 PSI 2000 PSI 2500 PSI*
250 0.3 0.2 0.3 0.5 0.6
500 0.7 0.5 0.7 0.9 1.2
1000 1.3 0.9 1.4 1.8 2.3
1450 1.9 1.3 2.0 2.7 3.3
1750 2.3 1.6 2.4 3.2 4.0
3000 3.7 2.5 3.8 5.0 6.3
3200 3.9 2.7 4.0 5.4 6.7
3450 4.2 2.9 4.3 5.8
NOTE:
In order to drive the pump from the side opposite the present shaft extension, simply
remove the valve casing from the crankcase and rotate the pumps 180 degrees to the
desired position. Be certain to rotate the seal case (item #20) as well, so that the weep
holes are down at the six o'clock position. Exchange the oil fill and the oil drain plugs,
also. Refer to the repair instructions as necessary for the proper assembly sequence.
7
Specifications
Model P221A
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:
The rating shown are the power
requirements for the
pump. Gas
engine power outputs must be
approximately twice the pump
power requirements shown above.
We recommend a 1.15 service factor
be specified when selecting an
electric motor as the power source.
To compute specific pump horse
power requirements, use the
following formula:
HP = (GPM X PSI) / 1450
*Intermittent duty only
U.S. .............................. Metric
1750 RPM
+
Flow (Continuous) @ 2000 PSI (140 Bar) ...... 2.3 GPM ...................... 8.9 LPM
Flow (Intermittent) @ 2500 PSI (175 Bar) ...... 2.3 GPM ...................... 8.9 LPM
3450 RPM
+
Flow (Continuous) @ 2000 PSI (140 Bar) ...... 4.2 GPM ...................... 15.9 LPM
Flow (Intermittent) @ 2500 PSI (175 Bar) ...... 4.2 GPM ...................... 15.9 LPM
Maximum Inlet Pressure.................................... 145 PSI ........................ 10 bar
Plunger Diameter ............................................... 0.71”............................ 18 mm
Stroke .................................................................. 0.28”............................ 7.0 mm
Max. Temperature of Pumped Fluids............... 160
o
F ........................... 71
o
C
Inlet Ports................................................................................................... (2) 1/2" BSP
Discharge Ports ......................................................................................... (2) 3/8" BSP
Shaft Rotation ....................................................... Top of Pulley Towards Fluid End
Crankshaft Diameter ..........................................0.98”............................ 24 mm
Key Width .......................................................... 0.31”............................ 8 mm
Shaft Mounting................................................... Right Side Facing Manifold
Weight.................................................................11.7 lbs. ....................... 5.3 Kg
Crankcase Oil Capacity .....................................7.5 fl.oz. ...................... 0.22 Liter
Extended Crankcase Oil Capacity.................... 9.0 fl.oz. ...................... (0.27 Liter
Volumetric Efficiency @ 1750 RPM ...................................................... 0.94
Volumetric Efficiency @ 3450 RPM ...................................................... 0.87
Mechanical Efficiency @ 3450 RPM...................................................... 0.86
+
Positive inlet pressure required