Control systems Control valves
4
1 Stage Perforated Trim (continued)
Kv (Cv US) values For conversion: Cv (UK) = Kv x 0.963
DN15 (½")
DN20 (¾")
DN25 (1")
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
4 (4.6)
6.3 (7.3)
10 (11.6)
16 (18.5)
25 (29)
25 (29)
50 (58)
80 (92)
551 (637)
787 (909)
Full port Linear
4 (4.6)
6.3 (7.3)
10 (11.6)
16 (18.5)
25 (29)
36 (42)
63 (73)
70 (81)
90 (104)
245 (283)
300 (347)
516 (596)
622 (719)
890 (1 028)
Reduction 1 Equal percentage Reduction 1 Linear Reduction 2 Equal percentage and Linear Reduction 2 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 Reduction 7 Equal percentage and Linear Reduction 8 Equal percentage and Linear
2.5 (2.9)
4 (4.6)
6.3 (7.3)
10 (11.6)
16 (18.5)
25 (29)
36 (42)
50 (58)
63 (73)
219 (253)
255 (295)
457 (528)
551 (637)
2.5 (2.9)
4 (4.6)
6.3 (7.3)
10 (11.6)
16 (18.5)
25 (29)
36 (42)
63 (73)
63 (73)
219 (253)
255 (295)
457 (528)
516 (596)
622 (719)
1.6 (1.8)
2.5 (2.9)
4 (4.6)
6.3 (7.3)
10 (11.6)
16 (18.5)
25 (29)
36 (42)
50 (58)
115 (133)
200 (231)
350 (405)
457 (528)
4.1 107
1.6 (1.8)
2.5 (2.9)
4 (4.6)
6.3 (7.3)
10 (11.6)
16 (18.5)
25 (29)
36 (42)
50 (58)
115 (133)
200 (231)
350 (405)
457 (528)
1.0 (1.2)*
1.6 (1.8)
2.5 (2.9)
4 (4.6)
6.3 (7.3)
10 (11.6)
16 (18.5)
25 (29)
36 (42)
75 (87)
152 (176)
265 (306)
350 (405)
457 (528)
0.5** (0.6)*
1.0 (1.2)*
1.6 (1.8)
4 (4.6)
6.3 (7.3)
16 (18.5)
16 (18.5)
265 (306)
457 (528)
0.2** (0.2)*
0.5** (0.6)*
1.0 (1.2)*
4 (4.6)
175 (203)
350 (405)
0.1** (0.1)*
0.2** (0.2)*
0.5** (0.6)*
100 (116)
265 (306)
0.1** (0.1)*
0.2** (0.2)*
175 (203)
0.1** (0.1)*
100 (116)
* Only available in Anti-cavitation ** Linear characteristic only
TI-S24-59 CTLS Issue 7
Page 9 of 14
Balanced and Multi-stage Trim Options for Spira-trol TM Two-port Control Valves
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