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13
-25
13
T
emperatur
e Regulator
OB-3, 3G
OB-3, 3G Nominal Size Selection Chart (For Water)
How to use the chart
When inlet pressure is 0.3 MPa, outlet pressure is 0.15 MPa, and flow rate is 9 m
3
/h, first find
the intersection point (a) with the differential pressure (ΔP) 0.15 MPa (0.3 MPa – 0.15 MPa)
before and after valve and the flow rate 9 m
3
/h. Since this intersection point (a) locates between
nominal sizes 32A and 40A, select the larger one, 40A.
* Chart of the flow rate is a reference value.
(a)
V: Flow rate m
3
/h
ΔP: Differential pressure MPa
Nominal size
