■
Pressure loss
MVF050 (Pipe size 50A)
MVF080 (Pipe size 80A)
MVF100 (Pipe size 100A)
MVF150 (Pipe size 150A)
●
Primary pressure 0.01 MPa
●
Primary pressure 0.3 MPa
0 200 400 600 800 1000 1200 1400 1600 1800 2000
3.0
2.5
2.0
1.5
1.0
0.5
0.0
Pr
essur
e loss
(kP
a)
Flow rate m
/h(normal)
3
0 1000 2000 3000 4000 5000 6000 7000
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
Pr
essur
e loss
(kP
a)
Flow rate m
/h(normal)
3
●
Primary pressure 0.7 MPa
●
Primary pressure 0.9 MPa
0 2000 4000 6000 8000 10000 12000 14000
14.0
12.0
10.0
8.0
6.0
4.0
2.0
0.0
Pr
essur
e loss
(kP
a)
Flow rate m
/h(normal)
3
0 2000 4000 6000 8000 10000 12000 14000 16000 18000
16.0
14.0
12.0
10.0
8.0
6.0
4.0
2.0
0.0
Pr
essur
e loss
(kP
a)
Flow rate m
/h(normal)
3
When the
MVF
is used for a gas other than air, multiply by the appropriate specific
gravity below.
Specific gravity of each gas (when air is 1.0)
Argon
1.38
Carbon dioxide
1.53
Oxygen
1.11
Natural gas (LNG base)
0.64
Methane 100 %
0.56
Propane 100 %
1.56
Butane 100 %
2.08
Example: For the
MVF150
, with a primary pressure of 0.9 MPa and a flow rate of
6000 m
3
/h (normal), the pressure loss of natural gas can be calculated as
follows:
Using the graph for 0.9 MPa primary pressure, the pressure loss is 2 kPa at
a flow rate of 6000 m
3
/h (normal). Multiplying the pressure loss of air by
the specific gravity of natural gas of 0.64, the pressure loss is obtained:
2 kPa × 0.64 = 1.28 kPa
27
Chapter 5. SPECIFICATIONS
