Nominal Size Selection Chart - Yoshitake OB-3 Manual

6. Nominal Size Selection Chart

● OB-3･3G (For Water)
Nominal size
(a)
∆P: Differential pressure MPa
How to use chart
When selecting the nominal size of a temperature regulator whose inlet pressure (P1), outlet (P2), and
steam flow rate are 0.3MPa, 0.15MPa, 9 m3/h, respectively, first find intersection point (a) of the
differential pressure = 0.15MPa (0.3MPa-0.15MPa) and the flow rate = 9 m3/h. Since the intersection
point (a) lies between nominal size 32A and 40A, select the larger one, 40A.
■EPDT-258a■
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