Product Handbook 2026 - Volume 1

Control systems Control valves

4

1 Stage Parabolic Balanced Trim (continued)

Kv (Cv US) values For conversion: Cv (UK) = Kv x 0.963

DN40 (1½")

DN50 (2")

DN65 (2½")

DN80 (3")

DN100 (4")

DN125 (5")

DN150 (6")

DN200 (8")

DN250 (10")

DN300 (12")

Trim

Equal percentage

25 (30)

36 (45)

63 (75)

100 (120)

160 (190)

245 (283)

370 (433)

580 (679)

700 (809)

1 000 (1 156)

Full port

25 (30)

36 (45)

63 (75)

100 (120)

160 (190)

260 (300)

390 (456)

640 (749)

780 (902)

1 100 (1 272)

Linear

Equal percentage

25 (33)

63 (85)

200 (231)

287 (336)

370 (433)

580 (670)

700 (809)

Reduction 1

25 (33)

63 (85)

200 (231)

287 (336)

550 (433)

640 (740)

780 (902)

Linear

4.1 105

Equal percentage

100 (116)

132 (154)

232 (271)

370 (428)

580 (670)

Reduction 2

100 (116)

132 (154)

232 (271)

550 (636)

640 (740)

Linear

Equal percentage

63 (73)

103 (120)

163 (191)

232 (268)

370 (428)

Reduction 3

63 (73)

103 (120)

163 (191)

232 (268)

550 (636)

Linear

Equal percentage

163 (188)

232 (268)

Reduction 4

163 (188)

232 (268)

Linear

Equal percentage

163 (188)

Reduction 5

163 (188)

Linear

28 (32)

50 (50)

85 (88)

117 (136)

180 (210)

260 (300)

390 (456)

640 (749)

780 (902)

1 100 (1 272)

Fast opening

TI-S24-59 CTLS Issue 7

Page 7 of 14

Balanced and Multi-stage Trim Options for Spira-trol TM Two-port Control Valves

Powered by