PERFORMANCE
WILDEN PUMP & ENGINEERING, LLC 14 PX400 Performance
SETTING 4 PERFORMANCE CURVE
EMS CURVE
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
Air
Setting 1
Multiplier
X Factor
Air
Setting 2
Flow Air
Setting 3
Flow Flow
The Efficiency Management System (EMS) can be used to optimize the performance of your Wilden pump for
specific applications. The pump is delivered with the EMS adjusted to setting 4, which allows maximum flow.
PX400 PLASTIC RUBBER-FITTED
TECHNICAL DATA
Ship Weight ..........Polypropylene 28 kg (62 lb)
PVDF 32 kg (70 lb)
Air Inlet
.......................... 19 mm (3/4”)
Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . .38 mm (1-1/2”)
Outlet
...........................38 mm (1-1/2”)
Suction Lift .....................5.5 m Dry (18.2’)
9.3 m Wet (30.6’)
Disp. Per Stroke
1
.................1.2 L (0.31 gal)
Max. Flow Rate ...............450 lpm (119 gpm)
Max. Size Solids ..................6.4 mm (1/4”)
1
Displacement per stroke was calculated at 4.8 bar (70 psig)
air inlet pressure against a 2.1 bar (30 psig) head pressure.
The Efficiency Management System (EMS)
can be used to optimize the performance of
your Wilden pump for specific applications.
The pump is delivered with the EMS adjusted
to setting 4, which allows maximum flow.
The EMS curve allows the pump user to deter-
mine flow and air consumption at each EMS
setting. For any EMS setting and discharge
pressure, the “X factor” is used as a multiplier
with the original values from the setting 4 per-
formance curve to calculate the actual flow
and air consumption values for that specific
EMS setting. NOTE: You can interpolate be-
tween the setting curves for operation at in-
termediate EMS settings.
EXAMPLE
A PX400 plastic, rubber-fitted pump operating at EMS setting 4,
achieved a flow rate of 250 lpm (66 gpm) using 102 Nm
3
/h (60 scfm)
of air when run at 5.5 bar (80 psig) air inlet pressure and 2.8 bar (40
psig) discharge pressure (see dot on performance curve).
The end user did not require that much flow and wanted to reduce
air consumption at his facility. He determined that EMS setting 1
would meet his needs. At 2.8 bar (40 psig) discharge pressure and
EMS setting 1, the flow “X factor” is 0.33 and the air “X factor” is
0.24 (see dots on EMS curve).
Multiplying the original setting 4 values by the “X factors” provides
the setting 1 flow rate of 82 lpm (22 gpm) and an air consumption
of 24 Nm
3
/h (14 scfm). The flow rate was reduced by 67% while
the air consumption was reduced by 76%, thus providing increased
efficiency.
For a detailed example for how to set your EMS, see beginning of
performance curve section.
Caution: Do not exceed 8.6 bar (125 psig) air supply pressure.
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