Yoshitake GD-20R, Руководство пользователя

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- 6 - ■ EPDT-023c ■
<For Air>
図
6
呼び径選定図（気体用）
Fig. 6
Example of Selection
When the inlet pressure (P1) is 0.5 MPa, the outlet pressure (P2) is 0.3 MPa and the flow rate is
400Nm3/h, for instance, the size of the pressure regulating valve is selected as follows. Find the
intersection point (A) of the inlet pressure (P1) 0.5 MPa and outlet pressure (P2) 0.3 MPa and go
straight down from the point (A) to find the intersection (B) crossing the flow rate line. The point (B)
is between line of 25A and 32A, and choose larger size 32A for application.
・
(A)
・
(B)
P
1
:Inlet Press.(MPa)
Nominal Size
P
2
:O
ut
let
P
ress.
(M
P
a)
P
2
:O
ut
let
P
ress.
(M
P
a)
Q
:
Fl
ow
r
at
e
(m
3
/h)
(N
or
m
al
st
at
e)
Q
:
Fl
ow
r
at
e
(m
3
/h)
(N
or
m
al
st
at
e)