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Soft seal butterfly valve
Soft seal butterfly valve is a kind of valve whose closing part (butterfly plate) is a disc and rotates around the valve shaft to open and close. It mainly plays the role of cutting off and throttling on the pipeline. The butterfly plate is driven by the valve rod. If it is turned 90 degrees, it can be opened and closed once. By changing the deflection angle of the butterfly plate, the medium flow can be controlled. The commonly used butterfly valves are clip type butterfly valve, lug type butterfly valve and flange type butterfly valve. Butterfly valve is suitable for producing furnace, gas, natural gas, liquefied petroleum gas, city gas, cold and hot air, chemical smelting and power generation environmental protection, building water supply and drainage and other engineering systems to transport all kinds of corrosive and non corrosive fluid medium, used to regulate and cut off the flow of medium.
1. The inclined elliptical butterfly plate radial dynamic balance sealing system is adopted, the force on both sides of the valve inlet and outlet is approximately balanced, the opening torque of the valve is small, the positive and reverse sealing performance is reliable, and the bidirectional pressure bearing capacity is 100%;
2. The sealing surface of the valve is made of integral metal sealing ring, which is machined with high precision. The sealing cross-section is elliptical, which forms a sealing pair with the metal sealing surface of the valve seat. When the valve is opened and closed, the sealing surface of butterfly plate contacts or disengages instantaneously along the 360 ° circle, which can quickly and accurately realize the opening or closing action;
3. Three eccentric structure is adopted, that is, an angle eccentricity is added on the basis of double eccentric butterfly valve.
Design specification: GB/T 12238, JB/T8527
Flange connection: GB/T 9113, JB/T79, HG20592
Structure length: GB/T12221
Tests and inspection: GB/T13927
Main material: cast steel, stainless steel, chromium-molybdenum steel, alloy steel, duplex steel
Product specification: DN50~2000mm
Pressure class: PN0.6~ 4.0mpa
Applicable medium: air, water, steam, gas, oil, acid, alkali, salt with weakly corrosive medium, etc
Applicable temperature: Carbon steel: -29℃~425℃ Stainless steel: -40℃~600℃
Driving mode: worm drive, pneumatic drive, electric drive, hydraulic drive
|
DN |
L |
D |
D1 |
D2 |
b |
f |
N-d0 |
A |
K |
E |
F |
H |
H1 |
H2 |
Φ2 |
N-d1 |
|
50 |
108 |
165 |
125 |
102 |
18 |
3 |
4-Φ18 |
180 |
65 |
50 |
13 |
83 |
338 |
28 |
12.6 |
4-Φ7 |
|
65 |
112 |
185 |
145 |
122 |
18 |
3 |
8-Φ18 |
180 |
65 |
50 |
13 |
93 |
358 |
28 |
12.6 |
4-Φ7 |
|
80 |
114 |
200 |
160 |
138 |
20 |
3 |
8-Φ18 |
245 |
65 |
50 |
13 |
100 |
413 |
28 |
12.6 |
4-Φ7 |
|
100 |
127 |
220 |
180 |
158 |
20 |
3 |
8-Φ18 |
240 |
90 |
70 |
13 |
114 |
428 |
28 |
15.77 |
4-Φ10 |
|
125 |
140 |
250 |
210 |
188 |
22 |
3 |
8-Φ18 |
240 |
90 |
70 |
13 |
125 |
444 |
28 |
18.92 |
4-Φ10 |
|
150 |
140 |
285 |
240 |
212 |
22 |
3 |
8-Φ22 |
350 |
90 |
70 |
13 |
143 |
553 |
28 |
18.92 |
4-Φ10 |
|
200 |
152 |
340 |
295 |
268 |
24 |
3 |
12-Φ22 |
350 |
125 |
102 |
13 |
170 |
678 |
38 |
22.1 |
4-Φ12 |
|
250 |
165 |
405 |
355 |
320 |
26 |
3 |
12-Φ26 |
550 |
125 |
102 |
13 |
198 |
742 |
38 |
28.45 |
4-Φ12 |
|
300 |
178 |
460 |
410 |
378 |
28 |
4 |
12-Φ26 |
600 |
125 |
102 |
20 |
223 |
803 |
38 |
31.6 |
4-Φ12 |
|
350 |
190 |
520 |
470 |
438 |
30 |
4 |
16-Φ26 |
600 |
150 |
125 |
20 |
270 |
866 |
45 |
31.6 |
4-Φ14 |
|
400 |
216 |
580 |
525 |
490 |
32 |
4 |
16-Φ30 |
600 |
175 |
140 |
20 |
300 |
940 |
51 |
33.15 |
4-Φ18 |
|
450 |
222 |
640 |
585 |
550 |
40 |
4 |
20-Φ30 |
750 |
175 |
140 |
20 |
340 |
995 |
51 |
37.95 |
4-Φ18 |
|
500 |
229 |
715 |
650 |
610 |
44 |
4 |
20-Φ33 |
750 |
175 |
140 |
22 |
355 |
1058 |
57 |
41.12 |
4-Φ18 |
|
600 |
267 |
840 |
770 |
725 |
54 |
5 |
20-Φ36 |
750 |
210 |
165 |
30 |
410 |
1163 |
70 |
50.63 |
4-Φ22 |
|
700 |
292 |
910 |
840 |
795 |
40 |
5 |
24-Φ36 |
750 |
300 |
254 |
30 |
478 |
1283 |
66 |
63.35 |
8-Φ18 |
|
800 |
318 |
1025 |
950 |
900 |
42 |
5 |
24-Φ39 |
750 |
300 |
254 |
30 |
529 |
1398 |
66 |
63.35 |
8-Φ18 |
|
900 |
330 |
1125 |
1050 |
1000 |
44 |
5 |
28-Φ39 |
1250 |
300 |
254 |
34 |
584 |
1498 |
118 |
75 |
8-Φ18 |
|
1000 |
410 |
1255 |
1170 |
1115 |
46 |
5 |
28-Φ42 |
1500 |
300 |
254 |
34 |
357 |
1608 |
142 |
85 |
8-Φ18 |
|
1200 |
470 |
1485 |
1390 |
1330 |
52 |
5 |
32-Φ48 |
1500 |
350 |
298 |
34 |
799 |
1876 |
150 |
105 |
8-Φ22 |
|
1400 |
530 |
1685 |
1590 |
1530 |
58 |
5 |
36-Φ48 |
- |
415 |
356 |
40 |
919 |
- |
200 |
120 |
8-Φ32 |
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