Control systems Control valves
4
2 Stage Perforated Trim (continued)
Kv (Cv US) values For conversion: Cv (UK) = Kv x 0.963
DN32 (1¼")
DN40 (1½")
DN50 (2")
DN65 (2½")
DN80 (3")
DN100 (4")
DN125 (5")
DN150 (6")
DN200 (8")
DN250 (10")
DN300 (12")
Trim
Full port Equal percentage
16 (18.5)
16 (18.5)
16 (18.5)
44 (51)
44 (51)
63 (73)
125 (145)
160 (185)
280 (324)
305 (353)
386 (446)
Full port Linear
16 (18.5)
16 (18.5)
16 (18.5)
50 (58)
50 (58)
63 (73)
125 (145)
160 (185)
280 (324)
305 (353)
436 (504)
Reduction 1 Equal percentage and Linear Reduction 2 Equal percentage and Linear Reduction 3 Equal percentage and Linear Reduction 4 Equal percentage and Linear Reduction 5 Equal percentage and Linear Reduction 6 Equal percentage and Linear
10 (11.6)
10 (11.6)
10 (11.6)
36 (42)
36 (42)
36 (42)
100 (116)
100 (116)
160 (185)
280 (324)
305 (353)
6.3 (7.3)
6.3 (7.3)
6.3 (7.3)
25 (29)
25 (29)
25 (29)
63 (73)
63 (73)
100 (116)
160 (185)
280 (324)
4.1 109
4 (4.6)
4 (4.6)
4 (4.6)
16 (18.5)
16 (18.5)
16 (18.5)
36 (42)
36 (42)
63 (73)
100 (116)
160 (185)
10 (11.6)
10 (11.6)
10 (11.6)
25 (29)
36 (42)
63 (73)
100 (116)
6.3 (7.3)
6.3 (7.3)
36 (42)
63 (73)
36 (42)
TI-S24-59 CTLS Issue 7
Page 11 of 14
Balanced and Multi-stage Trim Options for Spira-trol TM Two-port Control Valves
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