In actual comparison tests and documented field applications, an A31INF butterfly valve lives more than one million cycles. For dry solids, gases, slurry and high abrasion applications, the A31 inflatable 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 |
Design Features & Working Principle of A31INF Inflatable Butterfly Valve


Size | A | B | C | D | Di | Do | E | F | d | G | H | L | Weight (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 | 12/24 | 150 | 240 | 68 | 23 |
300 | 12" | 316 | 236 | 32 | 375 | 300 | 354 | 22 | 102/125 | 12/24 | 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 |
With unique patent designs, special attention on user' s feedback, ABC valves are widely applied in lithium battery industry, food industry, pharmaceutical, textile dyeing, heating and cooling, municipal, shipbuilding, electronics, nuclear power, petrochemical, paper-making, environmental protection etc.
Mission of ABC Valve-- Make fluid control easier.



ABC Main Products







1) Q: Are you a manufacturer or trading company?
A: ABC Valve is a professional valve manufacturer with experienced R&D team.
2) Q: Do you have any agent or representative abroad?
A: Yes, we have agents in some countries, they can offer local service for you.
A: We can supply butterfly valve, ball valve, check valve and so on.
4) Q: Do you have any certificate for the valves?
A: Yes, we have CE, BV, ATEX, TS and so on.
5) Q: What's the delivery time?
A: If all the parts of the valve are ready in stock, the valves can be delivered within 7~10 days.
A: ABC valves have been supplied to USA, Europe, Australia, Singapore, South Africa and so on.