Series A31lNF inflatable seated butterfly valves use air pressure to expand the seat against the disc. providing even pressure distribution for a bubble-tight seal in every close. Because the seat has no contact with the disc during valve opening and closing, there is minimum disc to seat friction. In actual comparison tests and documented field applications, an A31lNF butterfly valve lives more than one million cycles. For dry solids, gases, slurry and high abrasion applications, the A31inflatable seated butterfly valve is unsurpassed.
Connection | Wafer | Nominal diameter | DN25-DN600 | Max. working pressure | Up to 10Bar | Standard working pressure | Full vacuum to 8bar (According to air supply) | Flange accommodation | EN1092 PN10/16,ASME B16.5 Class150 | Face to face | EN558 Series 20, API 609 Table 1 | Top flange | ISO 5211 | Tightness check | ISO 5208 Category 3, API 598 Table 5 | Temperature range | -40°C to +200°C (Depending on pressure, medium and material) | Operation | Pneumatic actuator (DA, SA) | Torque | Varies with medium and application |
![](/uploadFile/month_2312/202312250421308666.jpg)
No. | Part name | Material | Standard | Surface Treatment | 1 | Body | Ductile Iron | ASTM A536 Gr.65-45-12(GGG40) | Epoxy RAL5021 | Stainless Steel | ASTM A351 CF8 | Passivation | ASTM A351 CF8M | Passivation | 2 | Disc | Ductile iron Nickel plated | ASTM A536 65-45-12 | Nickel plating | Ductile iron Nylon coated | ASTM A536 65-45-12 | Rilsan | Stainless Steel | ASTM A351 CF8 | Passivation | ASTM A351 CF8M | Passivation | SS Tungsten coated | ASTM A351 CF8+WC | Tungsten coating | SS PTFE Wrapped | ASTM A351 CF8+PTFE | PTFE lined | 3 | Seat | Nitrile Rubber | NBR(BUNA-N) | | Wear-resistant Nitrile | XNBR | | Copolymer EPDM-HT | EPDM-HT | | Polyurethane | PU | | Fluoelastomer | FPM(VITON) | | 4 | Stem | Stainless Steel | SS431 | | 5 | Retainer | Stainless Steel | SS304 | | 6 | Weather seal | Nitrile Rubber | NBR(BUNA-N) | | 7 | Bearing | Nylon Bonded | Nylon | Rilsan | RPTFE (for SS body) | RPTFE with Graphite I.D. | | 8 | Screw | Nylon Bonded | SS304 | |
![](/UpLoadFile/51cs2.jpg)
![](/uploadFile/month_2312/202312250423256274.jpg)
SIZE | A | B | C | D | Di | Do | E | F | d | G | H | L | WT (kg) | DN | INCH | 25/32 | 1"/1 1/4" | 110 | 51 | 13.5 | 75 | 34 | 61 | 9 | 50 | 8 | 70 | 19 | 30 | 1.5 | 40 | 1 1/2" | 130 | 54 | 13.5 | 85 | 42 | 71 | 9 | 50 | 8 | 70 | 28 | 33 | 2 | 50 | 2" | 135 | 72 | 19 | 94 | 52 | 86 | 11 | 70 | 10 | 90 | 32 | 43 | 3 | 65 | 2 1/2" | 150 | 83 | 19 | 115 | 67 | 104 | 11 | 70 | 10 | 90 | 50 | 46 | 4 | 80 | 3" | 161 | 92 | 19 | 135 | 81 | 122 | 11 | 70 | 10 | 90 | 69 | 46 | 5 | 100 | 4" | 177 | 105 | 19 | 151 | 101 | 140 | 11 | 70 | 10 | 90 | 88 | 52 | 6 | 125 | 5" | 195 | 120 | 19 | 185 | 127 | 141 | 14 | 70 | 10 | 90 | 115 | 56 | 8 | 150 | 6" | 208 | 133 | 19 | 204 | 151 | 195 | 14 | 70 | 10 | 90 | 141 | 56 | 9 | 200 | 8" | 239 | 170 | 25 | 265 | 202 | 248 | 17 | 70 | 10 | 90 | 194 | 60 | 13 | 250 | 10" | 281 | 200 | 32 | 320 | 254 | 301 | 22 | 102/125 | 12/14 | 150 | 240 | 68 | 23 | 300 | 12" | 316 | 236 | 32 | 375 | 300 | 354 | 22 | 102/125 | 12/14 | 150 | 290 | 78 | 31 | 350 | 14" | 332 | 254 | 40 | 425 | 339 | 401 | 22 | 125 | 14 | 150 | 330 | 80 | 43 | 400 | 16" | 367 | 301 | 40 | 475 | 388 | 451 | 27 | 125 | 14 | 150 | 377 | 102 | 58 | 450 | 18" | 397 | 341 | 65 | 535 | 440 | 515 | 36 | 140 | 18 | 175 | 425 | 114 | 95 | 500 | 20" | 437 | 382 | 65 | 590 | 490 | 573 | 36 | 140 | 18 | 175 | 475 | 127 | 125 | 600 | 24" | 522 | 464 | 80 | 695 | 590 | 660 | 46 | 165 | 22 | 210 | 570 | 154 | 180 | ★ Do/Di flange sealing face dimension is a big advantage of Magic Series butterfly valve which suitable for both slip-on and plate flange. Serrated sealing face eliminates roll out of seat.
Connection | Wafer | Nominal diameter | DN25-DN600 | Max. working pressure | Up to 10Bar | Standard working pressure | Full vacuum to 8bar (According to air supply) | Flange accommodation | EN1092 PN10/16,ASME B16.5 Class150 | Face to face | EN558 Series 20, API 609 Table 1 | Top flange | ISO 5211 | Tightness check | ISO 5208 Category 3, API 598 Table 5 | Temperature range | -40°C to +200°C (Depending on pressure, medium and material) | Operation | Pneumatic actuator (DA, SA) | Torque | Varies with medium and application |
Series A31lNF inflatable seated butterfly valves use air pressure to expand the seat against the disc. providing even pressure distribution for a bubble-tight seal in every close. Because the seat has no contact with the disc during valve opening and closing, there is minimum disc to seat friction. In actual comparison tests and documented field applications, an A31lNF butterfly valve lives more than one million cycles. For dry solids, gases, slurry and high abrasion applications, the A31inflatable seated butterfly valve is unsurpassed.
![](/uploadFile/month_2312/202312250421308666.jpg)
No. | Part name | Material | Standard | Surface Treatment | 1 | Body | Ductile Iron | ASTM A536 Gr.65-45-12(GGG40) | Epoxy RAL5021 | Stainless Steel | ASTM A351 CF8 | Passivation | ASTM A351 CF8M | Passivation | 2 | Disc | Ductile iron Nickel plated | ASTM A536 65-45-12 | Nickel plating | Ductile iron Nylon coated | ASTM A536 65-45-12 | Rilsan | Stainless Steel | ASTM A351 CF8 | Passivation | ASTM A351 CF8M | Passivation | SS Tungsten coated | ASTM A351 CF8+WC | Tungsten coating | SS PTFE Wrapped | ASTM A351 CF8+PTFE | PTFE lined | 3 | Seat | Nitrile Rubber | NBR(BUNA-N) | | Wear-resistant Nitrile | XNBR | | Copolymer EPDM-HT | EPDM-HT | | Polyurethane | PU | | Fluoelastomer | FPM(VITON) | | 4 | Stem | Stainless Steel | SS431 | | 5 | Retainer | Stainless Steel | SS304 | | 6 | Weather seal | Nitrile Rubber | NBR(BUNA-N) | | 7 | Bearing | Nylon Bonded | Nylon | Rilsan | RPTFE (for SS body) | RPTFE with Graphite I.D. | | 8 | Screw | Nylon Bonded | SS304 | |
![](/UpLoadFile/51cs2.jpg)
![](/uploadFile/month_2312/202312250423256274.jpg)
SIZE | A | B | C | D | Di | Do | E | F | d | G | H | L | WT (kg) | DN | INCH | 25/32 | 1"/1 1/4" | 110 | 51 | 13.5 | 75 | 34 | 61 | 9 | 50 | 8 | 70 | 19 | 30 | 1.5 | 40 | 1 1/2" | 130 | 54 | 13.5 | 85 | 42 | 71 | 9 | 50 | 8 | 70 | 28 | 33 | 2 | 50 | 2" | 135 | 72 | 19 | 94 | 52 | 86 | 11 | 70 | 10 | 90 | 32 | 43 | 3 | 65 | 2 1/2" | 150 | 83 | 19 | 115 | 67 | 104 | 11 | 70 | 10 | 90 | 50 | 46 | 4 | 80 | 3" | 161 | 92 | 19 | 135 | 81 | 122 | 11 | 70 | 10 | 90 | 69 | 46 | 5 | 100 | 4" | 177 | 105 | 19 | 151 | 101 | 140 | 11 | 70 | 10 | 90 | 88 | 52 | 6 | 125 | 5" | 195 | 120 | 19 | 185 | 127 | 141 | 14 | 70 | 10 | 90 | 115 | 56 | 8 | 150 | 6" | 208 | 133 | 19 | 204 | 151 | 195 | 14 | 70 | 10 | 90 | 141 | 56 | 9 | 200 | 8" | 239 | 170 | 25 | 265 | 202 | 248 | 17 | 70 | 10 | 90 | 194 | 60 | 13 | 250 | 10" | 281 | 200 | 32 | 320 | 254 | 301 | 22 | 102/125 | 12/14 | 150 | 240 | 68 | 23 | 300 | 12" | 316 | 236 | 32 | 375 | 300 | 354 | 22 | 102/125 | 12/14 | 150 | 290 | 78 | 31 | 350 | 14" | 332 | 254 | 40 | 425 | 339 | 401 | 22 | 125 | 14 | 150 | 330 | 80 | 43 | 400 | 16" | 367 | 301 | 40 | 475 | 388 | 451 | 27 | 125 | 14 | 150 | 377 | 102 | 58 | 450 | 18" | 397 | 341 | 65 | 535 | 440 | 515 | 36 | 140 | 18 | 175 | 425 | 114 | 95 | 500 | 20" | 437 | 382 | 65 | 590 | 490 | 573 | 36 | 140 | 18 | 175 | 475 | 127 | 125 | 600 | 24" | 522 | 464 | 80 | 695 | 590 | 660 | 46 | 165 | 22 | 210 | 570 | 154 | 180 | ★ Do/Di flange sealing face dimension is a big advantage of Magic Series butterfly valve which suitable for both slip-on and plate flange. Serrated sealing face eliminates roll out of seat.
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