‐
3
‐
■
EPDT-002g
■
H
3. Selection of nominal size
Select the nominal size same as the nominal size of the pipe. Strainer with smaller size may cause larger
pressure loss, then equipment may receive pressure lower than requirement.
(See <Figure 1 pressure loss>)
As one method of selecting suitable pipe diameter, Japan Industrial Standard (JIS) set the standard flow
velocity depend on the relative kind of fluid.
<Standard flow velocity of fluid>
Fluid
Standard flow velocity
Water, Oil
2 m/s(2
～
4)
*The above chart shows the standard flow velocity of relative fluid, which made in reference with the
standard of JIS F7101(Ship’s Machinery Standard Flow Velocity in pipes).
Screen:
φ
6-1.42holes/
㎠
Element: 60 mesh Fluid: Water
Fig. 1 Pressure loss chart
4. Piping
4.1 Piping example
Fig. 2 Fig. 3
(mm)
Size
20-32A
40-50A
65-80A
100A
H
More than 200
More than 250
More than 300
ΔP: Pressure loss MPa
V
:
F
lo
w
r
a
te
L
/m
in
