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Pump performance
Pump's ability to deliver material is based on
pressure (psi/bar) and quantity (cfm/lpm) of
air supplied to motor and amount of fluid
discharge backpressure to be overcome
within system.
Pump performance (page 7) contains
curves based on three different air pres-
sures. Curves relate delivery in gallons
(liters) per minute (X axis) to air consumption
in cubic feet (liters) per minute (right Y axis)
and to material discharge pressure in
psi (bar) (left Y axis).
Delivery versus discharge pressure and air consumption
bar
psi
525
35
450
30
375
25
300
20
225
15
150
10
75
5
0
Legend:
Δ
Air pressure
– – –
Air consumption
–––––
Material discharge pressure
SAE 10 oil at 82 °F (28 °C)
150 psi (10.3 bar) ∆
150 psi (10.3 bar) ∆
75 psi (5.2 bar) ∆
75 psi (5.2 bar) ∆
50 psi (3.4 bar) ∆
50 psi (3.4 bar) ∆
0
1
2
3
5
10
150 psi (10.3 bar) ∆
150 psi (10.3 bar) ∆
75 psi (5.2 bar) ∆
75 psi (5.2 bar) ∆
50 psi (3.4 bar) ∆
50 psi (3.4 bar) ∆
4
5
6
7
15
20
25
Delivery
7
cfm
lpm
35
900
30
800
25
700
600
20
500
15
400
300
10
200
5
100
8
9
Gallons per minute
30
Liters per minute
Fig. 2
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