The BFD (supercedes the BFK) series has a cast iron body, 316 S.S disc, EPDM seat and a spring return pneumatic actuator making it suited to a wide range of industrial applications. These wafer butterfly valves will fit all standard flanges and are operated by a high quality spring return (rack and pionion design) anodised aluminium pneumatic actuator. This enables a fail safe position if air should be lost. The unique bonded catridge design of the butterfly valve gives it a longer life span, allows vacuum to be run through it and enables the seat to be replaceable if ever the need should arise. Common applications include water trucks, irrigation, water treatment and other industrial applications. If using on a cement hopper please contact us. We recommend going up a size in actuator to compensate for the weight on the disc. If sizes above 600mm are required please contact us.

Model Size (mm) Actuator Media Pressure Media Temperature Actuator Pressure Actuator Port Size
BFD550-SR-E 50 SR63 Vacuum to 16 BAR -20°C to 90°C 6 to 8 BAR 1/8"
BFD565-SR-E 65 SR63 Vacuum to 16 BAR -20°C to 90°C 6 to 8 BAR 1/8"
BFD580-SR-E 80 SR75 Vacuum to 16 BAR -20°C to 90°C 6 to 8 BAR 1/8"
BFD5100-SR-E 100 SR88 Vacuum to 16 BAR -20°C to 90°C 6 to 8 BAR 1/8"
BFD5125-SR-E 125 SR100 Vacuum to 16 BAR -20°C to 90°C 6 to 8 BAR 1/4"
BFD5150-SR-E 150 SR115 Vacuum to 16 BAR -20°C to 90°C 6 to 8 BAR 1/4"
BFD5200-SR-E 200 SR125 Vacuum to 16 BAR -20°C to 90°C 6 to 8 BAR 1/4"
BFD5250-SR-E 250 SR145 Vacuum to 16 BAR -20°C to 90°C 6 to 8 BAR 1/4"
BFD5300-SR-E 300 SR180 Vacuum to 16 BAR -20°C to 90°C 6 to 8 BAR 1/4"
BFD5350-SR-E 350 SR200 Vacuum to 10 BAR -20°C to 90°C 6 to 8 BAR 1/4"
BFD5400-SR-E 400 SR240 Vacuum to 10 BAR -20°C to 90°C 6 to 8 BAR 1/4"
BFD5450-SR-E 450 SR270 Vacuum to 10 BAR -20°C to 90°C 6 to 8 BAR 1/4"
BFD5500-SR-E 500 SR270 Vacuum to 10 BAR -20°C to 90°C 6 to 8 BAR 1/4"

For Sprung Open the ‘5’ in the product code changes to a ‘6’.

For sizes over 600mm or different seat material please contact us.

Model DN Actuator C C1 H1 H2 J K L M AS2129 Table D AS2129 Table E ANSI150
ØD1 n-Ød1 ØD1 n-Ød1 ØD1 n-Ød1
BFD550-SR-E 50 SR63 42 46.1 225 70 162 80.5 80 20 114 4-18 114 4-18 120.5 4-19
BFD565-SR-E 65 SR63 44.7 49.1 245 77 162 80.5 80 20 127 4-18 127 4-18 139.5 4-19
BFD580-SR-E 80 SR75 45.2 48.4 261 87 208 94.5 97 20 146 4-18 146 4-18 152.5 4-19
BFD5100-SR-E 100 SR88 52.1 55.3 305 112 245 109 116 20 178 4-18 178 4(8)-18 190.5 4(8)-19
BFD5125-SR-E 125 SR100 54.4 58.8 332 128 266 123 122 20 210 4(8)-18 210 4(8)-18 216 4(8)-22
BFD5150-SR-E 150 SR115 55.8 59.1 361 143 310 137 142 30 235 4(8)-18 235 4(8)-22 241.5 4(8)-22
BFD5200-SR-E 200 SR125 60.6 64.1 423 173 340 148 154 30 292 4(8)-18 292 4(8)-22 298.5 4(8)-22
BFD5250-SR-E 250 SR145 65.6 71.8 499 210 401 168.5 179 30 356 4(8)-22 356 4(12)-22 362 4(12)-25
BFD5300-SR-E 300 SR180 76.9 81 578 244 532 224 244 30 406 4(12)-22 406 4(12)-26 432 4(12)-25
BFD5350-SR-E 350 SR200 76.5 79.5 635 267 532 224 244 30 470 4(12)-26 470 4(12)-26 476 4(12)-29
BFD5400-SR-E 400 SR240 86.5 90 697 297 662 266 288 30 521 4(12)-26 521 4(12)-26 539.5 4(16)-29
BFD5450-SR-E 450 SR270 105.6 109 737 315 730 306 323 30 584 4(12)-26 584 4(12)-26 578 4(16)-32
BFD5500-SR-E 500 SR270 131.8 135 840 360 730 306 323 30 641 4(16)-26 641 4(16)-26 635 4(20)-32
BFD5600-SR-E 600 SR380 152 156 1006 444 774 335 352 30 756 4(16)-30 756 4(16)-33 749.5 4(20)-35

All dimensions in mm unless specified otherwise

Item Description Material
1 Body Ductile Iron (Fusion Bonded Epoxy Coated)
2 Seat EPDM
3 Shaft SS431
4 Disc CF8M
5 Bushing PTFE
6 O Ring NBR
  Pneumatic Actuator Anodized Aluminium

Size 50mm to 600mm
Body FBE coated Cast Iron
Seat EPDM
Disc 316 Stainless Steel
Pressure Up to 16 BAR (depending upon size)
Actuation Spring Return Pneumatic

Product History