Ductile Iron Manual Butterfly Valve with 316 Stainless Steel Disc

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The BFD (supercedes the BFK) series has a fusion bonded epoxy coated Ductile Iron body, 316 S.S disc and an EPDM seat (as standard but also available in FKM) making them suited to a wide range of general water applications. These are Watermark, Standards Mark and WSAA (Water Service Association of Australia) certified. These wafer butterfly valves will fit all standard flanges and are operated by either a lockable lever & notch plate or gear box. The unique bonded catridge design gives them a longer life span, allows vacuum to be run through them and makes them replaceable if ever the need should arise. Designed & manufactured in accordance with API609, inspected and tested in accordance with API598. Common applications include water trucks, irrigation, cement hoppers and other industrial applications. If sizes above 600mm or extension shafts are required please contact us. For details on the gear boxes please click here.

Model Size (mm) Pressure Range Temperature Square drive size ISO Mtg Torque (Nm)
BFD50-L-E 50 Vacuum to 16 Bar -20°C to 90°C (40°C Potable) 9mm F05 12.5
BFD65-L-E 65 Vacuum to 16 Bar -20°C to 90°C (40°C Potable) 9mm F05 16.5
BFD80-L-E 80 Vacuum to 16 Bar -20°C to 90°C (40°C Potable) 9mm F05 24
BFD100-L-E 100 Vacuum to 16 Bar -20°C to 90°C (40°C Potable) 11mm F07 41
BFD125-L-E 125 Vacuum to 16 Bar -20°C to 90°C (40°C Potable) 14mm F07 56
BFD150-L-E 150 Vacuum to 16 Bar -20°C to 90°C (40°C Potable) 14mm F07 90
BFD200-L-E 200 Vacuum to 16 Bar -20°C to 90°C (40°C Potable) 17mm F10 185
BFD250-L-E 250 Vacuum to 16 Bar -20°C to 90°C (40°C Potable) 22mm F10 290
BFD300-L-E 300 Vacuum to 16 Bar -20°C to 90°C (40°C Potable) 22mm F10 340
BFD350-G-E 350 Vacuum to 10 Bar -20°C to 90°C (40°C Potable) 22mm F10 824
BFD400-G-E 400 Vacuum to 10 Bar -20°C to 90°C (40°C Potable) 22mm F14 1073
BFD450-G-E 450 Vacuum to 10 Bar -20°C to 90°C (40°C Potable) 27mm F14 1602
BFD500-G-E 500 Vacuum to 10 Bar -20°C to 90°C (40°C Potable) 36mm F14 1953
BFD600-G-E 600 Vacuum to 10 Bar -20°C to 90°C (40°C Potable) 36mm F16 3561

Also available in Viton and NBR seats.

Cast Iron Wafer Butterfly Valve

DN H H1 H2 B C C1 L0 P Upper Flange
ISO5211 K E z-d g h
50 255 225 70 30 42 46.1 262 9 F05 77 50 4-7 35 3
65 275 245 77 30 44.7 49.1 262 9 F05 77 50 4-7 35 3
80 291 261 87 30 45.2 48.4 262 9 F05 77 50 4-7 35 3
100 335 305 112 30 52.1 55.3 262 11 F07 90 70 4-9 55 3
125 362 332 128 30 54.4 58.8 262 14 F07 90 70 4-9 55 3
150 391 361 143 30 55.8 59.1 262 14 F07 90 70 4-9 55 3
200 463 423 173 40 60.6 64.1 348 17 F10 125 102 4-12 70 3
250 539 499 210 40 65.6 71.8 510 22 F10 125 102 4-12 70 3
300 618 578 244 40 76.9 81 510 22 F10 125 102 4-12 70 3
350 - 635 267 45 76.5 79.5 N/A 22 F10 125 102 4-12 70 3
400 - 697 297 51.2 86.5 90 N/A 27 F14 175 140 4-18 100 4
450 - 737 315 51.2 105.6 109 N/A 27 F14 175 140 4-18 100 4
500 - 840 360 64.2 131.8 135 N/A 36 F14 175 140 4-18 100 4
600 - 1006 444 70.2 152 156 N/A 36 F16 210 165 4-23 130 5

All dimensions in mm unless shown otherwise. D1 and n-d1 depend upon your flange standard. These wafer butterfly valves fit all common flange standards. 

Cast Iron Wafer Butterfly Valve

Item Part Name Material
1 Body Ductile Iron (Fusion Bonded Epoxy Coating)
2 Seat EPDM
3 Shaft SS431
4 Disc CF8M
5 Bushing PTFE
6 O Ring NBR
7 Handle Ductile Iron
8 Circlip SS316
9 Card SS304
10 Bolts&Nuts A2-70

Size 50mm to 600mm
Body FBE Coated Ductile Iron
Disc 316 Stainless Steel
Pressure Up to 16 BAR (depending upon size)
Actuation Lever or Gear Box

  • What is a Wafer Butterfly Valve?

    A wafer butterfly valve is a butterfly valve that is designed to clamp between two flanges without the need for the bolts to go through threaded holes on the body of the butterfly valve. It sits like a 'wafer' between the flanges and therefore fit multiple flange standards unlike lugged which will be designed to fit only one standard. In this case we are talking about ductile iron (similar to cast iron but better advantages in terms of strength, elongation & life) center line wafer butterfly valves. The center line refers to the location of the disc and shaft in relation to the body (there are other kinds of butterfly valves such as double & triple offset) where it is precisely in the middle. These valves can have different seat materials but the most common would be EPDM but others such as FKM, NBR or PTFE are also used.

  • How does a Wafer Butterfly Valve work?

    A butterfly valve works by the shaft rotating 90 degrees which will take the position of the disc in the flow from open to close (or vice versa). When it is closed a seal will be formed between the disc and the seat effectively stopping the flow of the media. When it is opened again the disc comes away from the seat and when it is fully open sits side (smallest surface area facing) on to the direction of the upstream flow. This 90 degree turn will take place from either a lockable handle (has a notch plate to stop at different positions within the 90 degree turn) or a gear box. Both have stops to prevent turning the valve past 90 degrees.

  • How long will my Wafer Butterfly Valve last?

    Like any valve this depends upon the usage case of your butterfly valve, its environment, media and how many times it is cycled. For instance if it is on a clean wet media, in a clean environment and not cycled regularly the life will be decades. If it is on a corrosive media and in a dry application with a high cycle rate the life will be much shorter. We conduct regular lab testing and 6,000 cycles is a reasonable life cycle depending upon the application. One advantage of this design is that the seat is replaceable and available as a repair kit.

  • How do I install a Wafer Butterfly Valve?

    These wafer butterfly valves are designed to clamp between two flanges. The bolts will pass through from one flange to the other to give the clamping force on the valve and keep it in position. The seat of the valve also forms the gasket on the flanges so there is no need for a secondary gasket. The bolts should be tightened in a diagonal shape to avoid over tightening in one area. For a full list of instructions please visit our butterfly valve installation & maintenance guide.

  • What are typical uses of a Wafer Butterfly Valve?

    These are very common in the water industry especially because most of our models hold a Watermark and Standards mark approval. They are also used for general purpose applications as long as the media, temperature and pressure are compatible. One main advantage of butterfly valves is they are relatively cheap compared to their size if you are comparing to another valve type (eg. ball valve).

  • How long will my product take to get to me? 

    This depends upon where you are based and the freight method chosen. If the express freight option is selected it is usually next day delivery to metropolitan areas in Australia for under 5kg. If free freight has been selected it will go by road freight which can be anywhere from 1 to 10 days depending upon your location. It usually averages 3 days.

  • What warranty do I get?

    All of our products come standard with a 12 month warranty. The good news is we have very strict quality controls and all valves leave our warehouse tested (full material and testing certificates to API 598 are available) and inspected so there are rarely any issues. Also once your valve is in and operating it will most likely continue to do so for a very long time. 

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