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Dimensions (mm) and Weights (kg)
OB-5 Nominal Size Selection Chart (For Steam)
Nominal size
* Chart of the flow rate is a reference value.
Nominal size
d
15A
Rc 1/2
20A
Rc 3/4
25A
Rc 1
(a)
(b)
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R 1
(For liquid)
(For air)
L
H
Weight
148
360
6
148
360
6
160
360
7
OB-5
How to use the chart
When inlet pressure (P
) is 0.4 MPa,
1
outlet pressure (P
) is 0.3 MPa,
2
and flow rate is 80 kg/h, first find
intersection point (a) of the inlet
pressure 0.4 MPa and the outlet
pressure 0.3 MPa. Trace down
vertically from this intersection point
(a) and find intersection point (b)
with the flow rate 80 kg/h. Since
this intersection point (b) locates
between nominal sizes 15A or 20A
and 25A, select the larger one, 25A.
13
13
-30
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