308-550 31
Performance
Chart
0
20
40
60
80
100
120
0 30 60 90 120 150
TEST
CONDITIONS
Pump
tested in water with T
eflon diaphragm and
inlet
submerged.
(114)
(0.28,
2.8)
(0.14, 1.4)
(0.42, 4.2)
KEY
FLUID PRESSURE AND FLOW
SCFM AIR CONSUMPTION
Example
of Finding Pump Air Consumption and Air Pressure at a Specific Fluid Delivery and Discharge Head:
To
supply 60 gpm (227 liters) fluid flow (horizontal scale) at 40 psi (0.28 MPa, 2.8 bar) discharge head pressure (vertical scale) re
-
quires
approximately 60 scfm (1.68 m
/min) air consumption at 70 psi (0.48 MPa, 4.8 bar) inlet air pressure.
FLUID
FLOW GPM (lpm)
psi
(MPa, bar)
feet
(meters)
280
(85.3)
240
(73.2)
200
(61.0)
160
(48.8)
120
(36.6)
80
(24.4)
40
(12.2)
0
(0.56,
5.6)
(0.7, 7)
(0.8, 8)
INLET AIR PRESSURES
A
120 psi air (0.8 MPa, 8 bar)
B
100 psi air (0.7 MPa, 7 bar)
C
70 psi air (0.48 MPa, 4.8 bar)
D
40 psi air (0.28 MPa, 2.8 bar)
A
B
C
D
E
F
G
H
AIR CONSUMPTION
E
25 scfm (0.70 m
/min)
F
50 scfm (1.40 m
/min)
G
75 scfm (2.10 m
/min)
H
100 scfm (2.80 m
/min)
(227) (341) (568)(454)