Alemite 9968 - Performance Curves; Delivery vs. Pressure and Air Consumption

Low-pressure stub pump model 9968 series accessories
Drum Tan k
Extension description  gallon  gallon / liter  gallon bench top  gallon obround
V-cut - - - - -
Threaded at both ends
)
- - - - -
Low-pressure stub pump model 9968 series accessories (continued)
Drum
Cover assembly description  gallon  gallon  gallon
Bolt-on - 
)
-
With  in (50,8 cm) bung adapter fitting - 
)
-
Performance curves
A pump’s ability to deliver fluid is based on
the pressure (psi (bar)) and quantity (cfm (lpm))
of air supplied to the motor and the amount
of fluid discharge (back) pressure to be over-
come within the system.
This chart contains curves based on three
different air pressures. The curves relate
delivery in gallons (liters) per minute (X axis)
to air consumption in cubic feet (liters) per
minute (right Y axis) and to fluid discharge
pressure in psi/bar (left Y axis).
Diagram 1
Delivery versus discharge pressure and air consumption
Fluid discharge pressure
bar psi
55
50
45
40
35
30
25
20
15
10
5
800
700
600
500
400
300
200
100
0
0
SAE No. 10 W 40 at 77 °F (25 °C)
150 psi (10,3 bar)
150 psi (10,3 bar)
100 psi (6,9 bar)
100 psi (6,9 bar)
50 psi (3,4 bar)
50 psi (3,4 bar)
ft
3
/min liters/min
40
35
30
25
20
15
10
5
0
1
2
3
4
5
6
7
1 100
1 000
900
800
700
600
500
400
300
200
100
Gallons/minute
Legend
Air pressure
Air consumption
Material discharge pressure
Liters/minute
5 10 15 20 25
)
For use with low level cut-off valve part number 
)
With sealing gasket
