TITAN FLOW CONTROL CATALOG - 0919

Titan Flow Control > Engineering &Technical Data

6

Butterfly Valve Seating and Unseating Valve Torque Ratings

Valve Sizes

Full Rated Pressure Ratings (Torque for psi is expressed as in-lb, Torque for MPa is expressed as N-m)

Correction Factors

in mm 50 psi

0.4 MPa 100 psi

0.6 MPa 150 psi

1.0 MPa 200 psi

1.4 MPa 250 psi

1.6 MPa

2 50 2.5 65 3 80 4 100 5 125 6 150 8 200 10 250 12 300 14 350 16 400 18 450 20 500 24 600 30 750 36 900 42 1050 48 1200

99

10 15 20 28 41 58

105 163 219 322 481 690

14 21 28 42 62 90

111 175 232 357 540 782

14 23 30 46 70

117 189 243 389 597 874

13 21 27 43 66 97

121 196 250 410 643 935

15 The following guidelines may be used to estimate torque values for other 24 types of service. For Dry Service: Multiply by 160% For Lubricated Service: Multiply by 85% For Actuator Sizing: First apply the correction factor for the type of service then use the additional correction factors Multiply by 150% (Single Valve Application) Multiply by 200% (Three way applications) 30 50 78 114 185 292 414 519 764 1195 1389 2332 4241 7711 - - -

150 206 289 422 598

102 170 269 392 454 714

1059 1670 2568 2639 4260 6287 8360

103 163 250 257 415 612 814

1182 1872 2794 3069 4879 7243 9180

154 243 363 399 634 940

1306 2074 3023 3500 5500 8199

1429 2275 3248 3964 5987 9183

159 253 361 441 666

1517 2403 3401 4267 6280 9817

1065

1022

1192 10000 2183 18200 3818 31500 7405 59399

1298 10859 2363 18728 4090 33530 7712 61793

1208 11409 2084 19155 3731 34844 6877 63351

15427 27313 54667 82460

1502 16813 2660 29407 5323 57034

8030 86034 11170 89600 11633

- - -

- - -

- - -

108015 10518 112704 14633 117376 15239 122101 13588 125177 15236 The above torques are for reference only. They were calculated from test data using clean, wet fluids (i.e. water) at ambient temperatures during on/off service. During actual service, hydrodynamic torque may meet or exceed the above listed seating and unseating torques. Therefore, hydrodynamic torque must be considered during system design to ensure proper valve and actuator selection. As always, a Titan FCI application engineer is ready to assist with valve and actuator selection.

ButterflyValve Cv Flow CoefficientValues (GPM @ 1ΔP)

Pressure Ratings (Bidirectional) 2" ~ 12" 200 psig 14 bar 14" ~ 24" 150 psig 10 bar Butterfly Valve is mated between two flanges for bidirectional service and the disc is in the closed position.

Valves Sizes

Angle of Valve Disc Rotation

in mm 10°

20°

30°

40°

50°

60°

70°

80° 105 178 275 546 930

90° 115 196 302 600

2 50 2.5 65 3 80 4 100 5 125 6 150 8 200 10 250 12 300 14 350 16 400 18 450 20 500 24 600 30 750 36 900 40 1000 42 1050 48 1200

0.06 0.10 0.20 0.30 0.50 0.80

3 6 9

7

15 25 39 78

27 45 70

44 75

70

12 18 36 61 95

119 183 364 620 958

116 230 392 605

17 29 45 89

139 237 366 727

133 205 408 694

1022 1579 3136 5340 8250

Pressure Ratings (Dead-End)

1437 2854 4859 7507

2" ~ 12" 14" ~ 24"

150 psig 100 psig

10 bar

2 3 4 6 8

188 320 495 715 983

1202 2049 3162 4568 6282

1903 3240 5005

Flow Rate Limits (On/Off Service) Fluids 20 ft/sec 6 m/sec Gases 175 ft/sec 54 m/sec This table lists velocity limits for on/off services only. Additionally, for throttling service, the flow velocity should not exceed 20 ft/sec for liquids and 175 ft/sec for gases. 7 bar Butterfly Valve is installed for dead-end service without a downstream flange. Disc is in the closed position. Please note, standard valves are not designed for dead-end service. Dead- end service must be specified by the customer. Seat Material Temperature Ratings Buna-N +10 ~ 180 °F -12 ~ 82 °C EPDM -30 ~ 225 °F -34 ~107 °C This table lists the theoretical temperature limits for elastomers. During actual service, hardening of the elastomer may cause the torque to exceed the structural limits of the valve.

151 234 338 464 615 791

1237 1911 2761 3797 5028

1072 1549 2130 2822 3628 5605

7230 10844 11917 9942 14913 16388

11 14 22 37

1302 1647 2587 4406

8320 13168 19752 21705

6465 10698 16931 25396 27908 9989 16528 26157 39236 43116

1222 2080 3050 3665 4095

9546 17010 28147 44545 66818 73246 6730 12740 20220 32500 52500 79600 87500

260 313 350 455

8089 15942

2429 39056 63093 95660 105154

9040 17108 27150 43640 70500 106890 117500

5365 11840 22400 30600 51200 92300 140000 154000 This chart can be used as a guide only due to the numerous variations of flow conditions that may occur during actual service.

Cv Equation For Liquids

C v = Flow Coefficient G = Specific Gravity of liquid at 60 ° F

C = Q v * G P

Q = Flow rate in U.S. gallons per minute (GPM) Δ P = Pressure drop in pounds per square inch (PSI)

The Flow Coefficient (designated as Cv) is a physical measurement that specifies the number of gallons per minute (GPM) that can pass through a piping component, at room temperature, and create a one (1) psi differential ( Δ P) across the piping component.

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