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13
-16
13
T
emperatur
e Regulator
OB-2000
OB-2000 Nominal Size Selection Chart(For steam)
(a)
(b)
W: Flow rate kg/h
P
2
: Outlet pressure MPa
P
1
: Inlet pressure MPa
W: Flow rate kg/h
P
2
: Outlet pressure MPa
Nominal size
[Example]
When selecting the nominal size of a temperature regulator whose inlet pressure (P
1
), outlet pressure (P
2
), and steam
flow rate are 0.5 MPa, 0.4 MPa, and 400 kg/h, respectively, first find intersection point (a) of the inlet pressure of
0.5 MPa and the outlet pressure of 0.4 MPa. Trace down vertically from this intersection point (a) to find intersection
point (b) with the flow rate of 400 kg/h.
Since this intersection point (b) lies between nominal sizes 20A and 25A, select the larger one, 25A.
* Chart of the flow rate is a reference value.
