Double-offset flanged butterfly valve, available with long or short face-to-face length for use in most common flow control applications. Long service life, as the media does not come into contact with the bearing, and due to the wear-resistant, corrosion and infiltration-proof seat with weld overlay. Suitable for use water distribution, water treatment, pre-treated waste water, dams, power plants, industry and pressure management.

Size Range : 2.1/2″ to 48″ Standard

  • Design and Manufacturing : API 609 / BS 5155 / BSEN 593 / IS 13095 / AWWA C504
  • Valve Face to Face Dimensions : API 609 (Short Pattern) / BS 5155 (Short Pattern) / IS 13095 (Short Pattern) / AWWA C504 (Short Pattern)
  • Inspection and Testing : API 598 / BS 6755 / AWWA C504
  • Flanged Standard Conformity : ASME B16.5 Class 150 (Upto 24″), ASME B16.47 Series “A” Class 150 (Above 26″ to 48″), AWWA C207, IS1538, BS 5404, IS 6392
  • Pressure Temparature Rating : ASME B16.34
  • Top Flange Dimensions : Bolt Hole ISO 5211
  • Steam Dimensions : Square Drive To ISO 5211
  • Leakage Class : Class VI As Per ASME B 16, 16.104

Note : For, Sea Water Aplication, Ebonite Linning On Request.

Double Offset Disc Butterfly Valve with Pneumatic Actuator

  • Size  : 2½” to 88″
  • MOC : WCB / CF8 / CF8M / CF3M
  • Seals: NBR / PTFE / RPTFE
  • Pressure : PN 10 / 16 / 20 & 25
  • Temperature : Upto 180°c / 250°c
  • Ends : Wafer Type / Double Flange
Flange Standards Dimension Table :
As Per ASME B16.5 150# Dimensions Table
Valve Size Port L1 ØD Øg b f ØJ N PCD
Inch MM
1/2″ 15 13 108 90 34.9 9.6 2 15.9 4 60.3
3/4″ 20 19 117 100 42.9 11.2 2 15.9 4 69.9
1″ 25 25 127 110 50.8 12.7 2 15.9 4 79.4
1.1/4″ 32 32 140 115 63.5 14.3 2 15.9 4 88.9
1.1/2″ 40 38 165 125 73 15.9 2 15.9 4 98.4
2″ 50 49 178 150 92.1 17.5 2 19.05 4 120.7
2.1/2″ 65 62 190 180 104.8 20.7 2 19.05 4 139.7
3″ 80 74 203 190 127 22.3 2 19.05 4 152.4
4″ 100 100 229 230 157.2 22.3 2 19.05 8 190.5
5″ 125 125 254 255 185.7 22.3 2 22.2 8 215.9
6″ 150 150 267 280 215.9 23.9 2 22.2 8 241.3
8″ 200 201 292 345 269.9 27 2 22.2 8 298.5
10″ 250 252 330 405 323.8 28.6 2 25.4 12 362
12″ 300 303 610 485 381 30.2 2 25.4 12 431.8

(All Dimensions are in mm)

As Per ASME B16.5 300# Dimensions Table
Valve Size Port L1 ØD Øg b f ØJ N PCD
Inch MM
1/2″ 15 13 140 95 34.9 12.7 2 15.9 4 66.7
3/4″ 20 19 152 115 42.9 14.3 2 19.05 4 82.6
1″ 25 25 165 125 50.8 15.9 2 19.05 4 88.9
1.1/4″ 32 32 178 135 63.5 17.5 2 19.05 4 98.4
1.1/2″ 40 38 190 155 73 19.1 2 22.2 4 114.3
2″ 50 49 216 165 92.1 20.7 2 19.05 8 127
2.1/2″ 65 62 241 190 104.8 23.9 2 22.2 8 149.2
3″ 80 74 282 210 127 27 2 22.2 8 168.3
4″ 100 100 305 255 157.2 30.2 2 22.2 8 200
5″ 125 125 381 280 185.7 33.4 2 22.2 8 235
6″ 150 150 403 320 215.9 35 2 22.2 12 269.9
8″ 200 201 419 380 269.9 39.7 2 25.4 12 330.2
10″ 250 252 457 445 323.8 46.1 2 28.6 16 387.4
12″ 300 303 648 520 381 49.3 2 31.75 16 450.8

(All Dimensions are in mm)

As Per ASME B16.5 600# Dimensions Table
Valve Size Port L1 ØD Øg b f ØJ N PCD
Inch MM
1/2″ 15 13 165 95 34.9 14.3 7 15.9 4 66.7
3/4″ 20 19 190 115 42.9 15.9 7 19.05 4 82.6
1″ 25 25 216 125 50.8 17.5 7 19.05 4 88.9
1.1/4″ 32 32 229 135 63.5 20.7 7 19.05 4 98.4
1.1/2″ 40 38 241 155 73 22.3 7 22.2 4 114.3
2″ 50 49 292 165 92.1 25.4 7 19.05 8 127
2.1/2″ 65 62 330 190 104.8 28.6 7 22.2 8 149.2
3″ 80 74 356 210 127 31.8 7 22.2 8 168.3
4″ 100 100 432 275 157.2 38.1 7 25.4 8 215.9
5″ 125 125 508 330 185.7 44.5 7 28.6 8 266.7
6″ 150 150 559 355 215.9 47.7 7 28.6 12 292.1
8″ 200 201 660 420 269.9 55.6 7 31.75 12 349.2
10″ 250 252 787 510 323.8 63.5 7 34.9 16 431.8
12″ 300 303 838 560 381 66.7 7 34.9 20 489

(All Dimensions are in mm)

Note : 900# / 1500# / 2500# Available On Request.