Series A74 Lug high performance butterfly valve provides a cost-effective solution for a wide range of applications where bubble-tight shut-off is required. Utilizing an eccentric disc and offset shaft, the design incorporates the flexible-lip sealing system into a lightweight, compact body. The result is that in many cases the valve can replace globe valve and gate valve yet easier operating, longer lasting and lower cost.
Significant performance makes the valve widely used in many applications such as Airport refueling, Hydrocarbon processing, HVAC, Air treatment, Chemical processing, Purified gas, Steam and vacuum services, Potable water, Powder and pulp processing, etc.
Lug design makes the valve convenient for connection between flanges and well used in end of pipe.
Features
• One-piece stem design with ISO 5211 square drive
• ISO 5211 direct mounting flange on the valve body
• Easy-adjust gland packing accessible with actuator mounted in place
• Belleville washers on the gland nut offer reliable primary sealing between shaft and packing
• Retaining ring for both equably pressing on packing and stem blowout proof
• Multiply rows of RPTFE chevron for soft seat valve and Graphite chevron for fire safe and metallic seat
• Extended neck for pipe insulation
• Self-energized seat resulting in longer life and reduced maintenance
• Pin-less shaf t to disc connec tion makes the valve convenient for parts replacement and reliable even under corrosion
• Seat retainer supports the seat and allows for easy changeout
• Double offset disc reducing the valve torque
• Alloy harden disc surface for metal seat increases the sealing life time
• Integral disc stop prevent disc from over travel
• Soft seat, fire safe seat and metallic seat are replaceable each other
• PTFE lined SS316 bearing support stem and increase service life
• Thrust ring for anti-blowout and anti-static
| Connection |
Wafer Lug |
| Nominal diameter |
DN50-DN600 |
| Max. working pressure |
Up to 50 Bar (Class 300) |
| Standard working pressure |
20 Bar (Class 150) , 50 Bar (Class 300) |
| Vacuum |
Full vacuum |
| Face to Face |
API 609 Category B, Wafer & Lug |
| Flange standard |
EN1092 PN10/16, ANSI Class150, JIS 10K/16K |
| Top flange |
ISO 5211 |
| Tightness check |
ISO 5208 Category 3, API 598 Table 5 |
| Temperature range |
-40° C to +400° C (Depending on pressure, medium and material) |
| Operation |
Hand level, gear box, pneumatic actuator, electric actuator |
A73 Dimension
| SIZE |
A |
B |
C |
D |
E |
Top
Flange |
G |
L |
WT(kg) |
A |
B |
C |
D |
E |
Top
Flange |
G |
L |
WT(kg) |
| DN |
INCH |
Class150 |
Class300 |
| 50 |
2" |
126 |
79 |
13.5 |
92 |
11 |
F05 |
45 |
43 |
3 |
126 |
79 |
13.5 |
92 |
11 |
F05 |
45 |
43 |
3 |
| 65 |
21/2" |
126 |
87 |
13.5 |
105 |
11 |
F05 |
45 |
46 |
4 |
126 |
87 |
13.5 |
105 |
11 |
F05 |
45 |
46 |
4 |
| 80 |
3 |
145 |
100 |
17.5 |
130 |
11 |
F07 |
72 |
48 |
5 |
145 |
100 |
17.5 |
130 |
11 |
F07 |
72 |
48 |
5 |
| 100 |
4" |
170 |
124 |
17.5 |
157 |
14 |
F07 |
91 |
54 |
6 |
170 |
124 |
17.5 |
157 |
14 |
F07 |
91 |
54 |
6 |
| 125 |
5" |
185 |
144 |
17.5 |
186 |
14 |
F07 |
114 |
57 |
9 |
185 |
144 |
17.5 |
186 |
14 |
F07 |
114 |
57 |
9 |
| 150 |
6" |
203 |
150 |
18.5 |
216 |
17 |
F10 |
145 |
57 |
12 |
203 |
150 |
18.5 |
216 |
17 |
F10 |
145 |
57 |
12 |
| 200 |
8 |
239 |
186 |
24.5 |
269 |
22 |
F10 |
192 |
64 |
19 |
257 |
204 |
24.5 |
269 |
22 |
F10 |
192 |
73 |
23 |
| 250 |
10" |
275 |
226 |
24.5 |
324 |
22 |
F10 |
240 |
71 |
33 |
288 |
238 |
30 |
324 |
27 |
F12 |
240 |
83 |
39 |
| 300 |
12" |
307 |
251 |
30 |
380 |
27 |
F12 |
285 |
81 |
42 |
330 |
268 |
30 |
380 |
27 |
F12 |
285 |
92 |
55 |
| 350 |
14" |
337 |
294 |
30 |
416 |
27 |
F12 |
328 |
92 |
61 |
337 |
294 |
39 |
416 |
36 |
F14 |
320 |
117 |
79 |
| 400 |
16" |
368 |
320 |
30 |
476 |
27 |
F14 |
373 |
102 |
88 |
368 |
320 |
49 |
476 |
46 |
F16 |
363 |
133 |
103 |
| 450 |
18" |
406 |
341 |
39 |
534 |
36 |
F16 |
422 |
114 |
135 |
406 |
341 |
49 |
534 |
46 |
F16 |
400 |
149 |
170 |
| 500 |
20" |
442 |
383 |
49 |
588 |
46 |
F16 |
470 |
127 |
173 |
442 |
383 |
49 |
588 |
46 |
F25 |
450 |
159 |
225 |
| 600 |
24" |
493 |
442 |
49 |
692 |
46 |
F25 |
570 |
154 |
272 |
500 |
442 |
58 |
692 |
55 |
F25 |
550 |
181 |
338 |
Design & Advantages of A73 High Performance Double Eccentric Butterfly Valve
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 Clients
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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