General Data

Size: 1 – 16 inch
Pressure Class: Class 150 – 600
Temperature Range: -320 to 750 °F (-196 to 400 °C)
Body Material: Carbon steel (A105), stainless steel (S.S316), ductile iron (WCB, WCC, CF8M, CF3M), brass, Monel
End Connection: Socket / Butt weld, Threaded, Flanged (RF / RTJ)

Catalogue Cv curve & tableEngineering estimate

Cv vs opening percentage — PSM reference catalogue data

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Rated Cv 13.8NPS 1"Characteristic Equal %Cv ratio at 50% 0.242Rangeability 40Confidence lowBack-test error ±45%

Opening %	Cv	% of rated
10	0.3	2%
20	0.8	6%
30	1.2	9%
40	2.3	16%
50	3.3	24%
60	5.1	37%
70	7.7	56%
80	10.3	75%
90	12.4	90%
100	13.8	100%

This table is not manufacturer measured data: Cv comes from the scaling law fitted to the measured series (back-test error ±45%, confidence low). Confirm with PSM engineering before ordering.

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