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4.4 Nominal size selection chart (External sensing)
* Please contact us on internal sensing method.
For example, take a pressure reducing valve whose inlet pressure (P
) is 0.6 MPa, reduced
1
pressure (P
) 0.4 MPa, flow rate 600 kg/h. When determining the nominal size, find the
2
point of intersection (A) of inlet pressure 0.6 MPa and reduced pressure 0.4 MPa. Vertically
proceed from point (A) to come across the flow rate 600 kg/h, and regard this point as (B).
Point (B) is between nominal sizes 20A and 25A. Select the larger nominal size (in this
example, nominal size 25A)
■EPDT-098a■
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