Pressure Drop Charts
PRESSURE DROP CHARTS
The pressure drop curves are valid for fluids with density and viscosity similar to factory
test fluids� Fluids with higher viscosity than these test fluids yield a higher pressure drop
through the flow meter and piping system per a given flow volume�
A system must have adequate fluidic horsepower available to move the system fluid at a
prescribed rate at a pressure adequate to overcome all pressure reducing devices, including
the flow meter�
1/2, 3/4 and 1 in. OIL & WATER METERS
FLOW (GPM)
0
3
6
9
12
15
18
21
24
27
30
PRESSURE DROP
(PSID)
0
2.00
4.00
6.00
8.00
10.00
16 GPM
18 GPM
4 GPM
10 GPM
28 GPM
7 GPM
1-1/2 and 2 in. OIL & WATER METERS
FLOW (GPM)
0
10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0
PRESSURE DROP
(PSID)
0
0.5
1.0
1.5
2.0
2.5
25 GPM
50 GPM
75 GPM
100 GPM
0
2
4
6
8
10
12
0
25
50
75
100
125
150
175
200
225
250
275
300
Pr
essu
re D
ro
p
(P
SI
D
)
Flow Rate (GPM)
200 G PM U n its
275 G PM U n its
Page 25
October 2019
VAM-UM-00367-EN-03
www.
.com
1.800.561.8187
