Series A31INF 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 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 |
ABC Valve focuses on Automatic Butterfly valve Control. The manufacturing system and products are certified by ISO9001, BV Marine, CE, ATEX and TS. The cooperative team is knowledgeable in fluid control technology and make sure that ABC valves suppling to worldwide customers with high quality and competitive price.
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
ABC Team with Clinets
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.
3) Q: What kinds of valve can you supply?
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.
6) Q: What are the countries or regions you supply valves?
A: ABC valves have been supplied to USA, Europe, Australia, Singapore, South Africa and so on.
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