Performance
curves
The pumps ability to deliver material is
based on pressure, psi (bars), and quantity,
cfm (lpm), of air supplied to the motor and
the amount of material discharge back
pressure to be overcome within the system.
This chart contains curves based on three
different air pressures. The curves relate
delivery in lbs (kg) per minute (X axis) to air
consumption in ft
3
(liters) per minute (right Y
axis) and to material discharge pressure in
psi (bars) (left Y axis).
Delivery versus discharge pressure and air consumption
Bar
psi
1 200
80
70
1 000
60
800
50
600
40
30
400
20
200
10
0
Legend:
Air pressure
Air consumption
Material discharge pressure
NLGI 2 grease at 70 °F (21 °C)
100 psi (6.9 bars)
75 psi (5.2 bars)
50 psi (3.4 bars)
15
30
45
20
5
10
15
Delivery
100 psi (6.9 bars)
75 psi (5.2 bars)
50 psi (3.4 bars)
60
75
90
25
30
35
40
7
3
Ft /min
Liters/min
150
4 000
125
3 500
3 000
100
2500
75
2 000
1 500
50
1 000
25
500
Pounds/minute
7 pounds approximates 1 gallon
Kilograms/minute
0.84 kg approximates 1 liter
Table 4