The BFL series of lugged butterfly valves (table E & table D/AS4087 PN16) have a cast iron body, 316 S.S disc and an EPDM seat making them suited to a wide range of general water and industrial applications. They are operated by either a high quality anodised aluminium spring return (rack and pinion design) pneumatic actuator. This allows the valve to return to a fail safe position should air be lost. The unique bonded catridge design of the valve gives it a longer life span, allows vacuum to be run through it and makes it replaceable if ever the need should arise. Common applications include water trucks, irrigation, cement hoppers and other industrial applications. If different flange standards or different seat materials are required please contact us.

Model Size (mm) Actuator Media Pressure Media Temperature Actuator Pressure Actuator Port Size
BFL550-SR-E 50 SR63 Vacuum to 16 BAR -20°C to 90°C (40°C Potable) 6 to 8 BAR 1/8"
BFL565-SR-E 65 SR63 Vacuum to 16 BAR -20°C to 90°C (40°C Potable) 6 to 8 BAR 1/8"
BFL580-SR-E 80 SR75 Vacuum to 16 BAR -20°C to 90°C (40°C Potable) 6 to 8 BAR 1/8"
BFL5100-SR-E 100 SR88 Vacuum to 16 BAR -20°C to 90°C (40°C Potable) 6 to 8 BAR 1/8"
BFL5125-SR-E 125 SR100 Vacuum to 16 BAR -20°C to 90°C (40°C Potable) 6 to 8 BAR 1/4"
BFL5150-SR-E 150 SR115 Vacuum to 16 BAR -20°C to 90°C (40°C Potable) 6 to 8 BAR 1/4"
BFL5200-SR-E 200 SR125 Vacuum to 16 BAR -20°C to 90°C (40°C Potable) 6 to 8 BAR 1/4"
BFL5250-SR-E 250 SR145 Vacuum to 16 BAR -20°C to 90°C (40°C Potable) 6 to 8 BAR 1/4"
BFL5300-SR-E 300 SR180 Vacuum to 16 BAR -20°C to 90°C (40°C Potable) 6 to 8 BAR 1/4"
BFL5350-SR-E 350 SR240 Vacuum to 10 BAR -20°C to 90°C (40°C Potable) 6 to 8 BAR 1/4"
BFL5400-SR-E 400 SR240 Vacuum to 10 BAR -20°C to 90°C (40°C Potable) 6 to 8 BAR 1/4"
BFL5450-SR-E 450 SR270 Vacuum to 10 BAR -20°C to 90°C (40°C Potable) 6 to 8 BAR 1/4"
BFL5500-SR-E 500 SR270 Vacuum to 10 BAR -20°C to 90°C (40°C Potable) 6 to 8 BAR 1/4"

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

Spring Return Lugged Butterfly Valve

DN Actuator A B D1 F H1 H2 H3 L M P
50 SR63 162 81 114 80.4 80 161 101 43 4-M16 1/8"
65 SR63 162 81 127 80.4 80 175 101 46 4-M16 1/8"
80 SR75 208 97 146 94.5 95 181 117 46 4-M16 1/8"
100 SR88 245 116 178 109 114 200 136 52 8-M16 1/8"
125 SR88 245 116 210 109 127 213 136 56 8-M16 1/8"
150 SR115 310 142 235 137 139 223 172 56 8-M20 1/4"
200 SR125 340 154 292 148 175 260 184 60 8-M20 1/4"
250 SR145 401 179 356 168.5 203 292 209 68 12-M20 1/4"
300 SR160 430 192 406 186.5 242 337 222 78 12-M24 1/4"

All dimensions in mm unless shown otherwise. 

Spring Return Lugged Butterfly Valve Construction

Number Item Material
1 Body Fusion Bonded Epoxy Cast Iron
2 Seat Phenolic backed cartridge style EPDM
3 Disc 316 Stainless Steel
4 Shaft 416 Stainless Steel
5 Bushings PTFE
6 Stem Orings EPDM
7 Actuator Ports Anodized Aluminium
8 Pneumatic Actuator Anodized Aluminium
9 Visual Indicator Thermoplastic

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