Cryogenic Butterfly Valve
Technical Parameters
Product model: DD343WNominal diameter: NPS 3"~NPS 48" DN80~DN1200
Pressure range: CL150~CL900 PN6~PN150
Main material: carbon steel, stainless steel, alloy steel, etc
Working temperature: ≥-196°C
Design standards: API 609, GB/T12238, JB/T 8527, GB/T 24925, BS 6364
Structure length: API 609, ASME B16.10, GB/T12221
Connection standards: ASME B16.5, ASME B16.4, GB/T 9113, HG/T 20592
Inspection and testing: API 598, GB/T13927, JB/T9092, GB/T 26480
Pressure and temperature grades: ASME B16.34, GB/T 12224
Product Features
1. The double sealing of valve stem lip-seal + packing can reduce the amount of packing.
2. Extend the valve cover design, strictly control the gap between the valve stem and the extended neck, reduce the cold flow channeling, and prevent the filling material icing caused by the large switch torque and the scratching of the valve stem.
3. The gland and sleeve adopt self-centering design to effectively prevent imbalance caused by uneven force on the gland.
4. Using finite element auxiliary design, the high-quality wall thickness of the extended valve cover is obtained to ensure that the cooling effect is better.
5. Drip board design, increase the cooling area, prevent the filling material from freezing; Effectively avoid condensate dripping onto the valve body.
6. The sealing surface of the valve seat is hardened to ensure that it will not be scratched at low temperature.
7. Set a drainage groove at the packing mouth of the extended valve cover to effectively prevent condensate from entering the packing cavity.
8. The special cutting method of the four open rings ensures that the four open rings form a complete ring structure after assembly, with uniform force and better pressure-bearing effect.
9. Internal top-loading structure, convenient for online maintenance of pipelines.
10. Detachable sealing pair design, with elastic supplement function at low temperature, lower leakage rate and better performance.
10. The fixed structure of the oblique cone pin effectively prevents the butterfly plate from reversing under the action of pressure difference, causing internal leakage.
12. All fasteners in contact with low temperature adopt full thread structure.
Main connection size（CLASS150）
|
DN |
A |
B |
C |
D |
L |
ΦW |
H |
|
in/mm |
|||||||
|
3(80) |
632 |
125 |
410 |
596 |
114 |
150 |
280 |
|
4(100) |
662 |
141 |
440 |
626 |
127 |
150 |
280 |
|
6(150) |
740 |
165 |
530 |
700 |
140 |
200 |
280 |
|
8(200) |
795 |
214 |
585 |
755 |
152 |
300 |
315 |
|
10(250) |
885 |
243 |
675 |
845 |
165 |
500 |
350 |
|
12(300) |
974 |
286 |
740 |
918 |
178 |
500 |
350 |
|
14(350) |
1059 |
312 |
825 |
1003 |
190 |
600 |
380 |
|
16(400) |
1115 |
350 |
845 |
1035 |
216 |
700 |
380 |
|
18(450) |
1200 |
383 |
930 |
1120 |
222 |
500 |
485 |
|
20(500) |
1200 |
414 |
930 |
1120 |
229 |
500 |
485 |
|
24(600) |
1400 |
484 |
1040 |
1260 |
267 |
600 |
538 |
|
30(750) |
1655 |
611 |
1265 |
1495 |
318 |
500 |
621 |
|
32(800) |
1655 |
611 |
1265 |
1495 |
318 |
600 |
621 |
|
36(900) |
1840 |
736 |
1450 |
1680 |
330 |
700 |
666 |
|
40(1000) |
2000 |
801 |
1580 |
1820 |
410 |
600 |
766 |
|
42(1050) |
2000 |
801 |
1580 |
1820 |
410 |
700 |
766 |
|
48(1200) |
2167 |
866 |
1717 |
1967 |
470 |
800 |
793 |
Main connection size（CLASS 300）
|
DN |
A |
B |
C |
D |
L |
ΦW |
H |
|
in/mm |
|||||||
|
3(80) |
632 |
125 |
410 |
596 |
114 |
150 |
280 |
|
4(100) |
662 |
141 |
440 |
626 |
127 |
300 |
315 |
|
6(150) |
760 |
189 |
550 |
720 |
140 |
300 |
315 |
|
8(200) |
849 |
236 |
615 |
793 |
152 |
500 |
350 |
|
10(250) |
939 |
272 |
705 |
883 |
165 |
600 |
380 |
|
12(300) |
1010 |
310 |
740 |
930 |
178 |
400 |
465 |
|
14(350) |
1115 |
335 |
845 |
1035 |
190 |
500 |
485 |
|
16(400) |
1235 |
389 |
875 |
1095 |
216 |
500 |
540 |
|
18(450) |
1370 |
422 |
1010 |
1230 |
222 |
600 |
540 |
|
20(500) |
1410 |
462 |
1050 |
1270 |
229 |
500 |
620 |
|
24(600) |
1525 |
531 |
1135 |
1365 |
267 |
600 |
660 |
|
30(750) |
1670 |
671 |
1340 |
1420 |
318 |
500 |
730 |
|
32(800) |
1850 |
671 |
1430 |
1528 |
318 |
600 |
795 |
|
36(900) |
1968 |
801 |
1564 |
1680 |
330 |
900 |
810 |
Main connection size（CLASS 600）
|
DN |
A |
B |
C |
D |
L |
ΦW |
H |
|
in/mm |
|||||||
|
4(100) |
678 |
185 |
448 |
638 |
190 |
300 |
315 |
|
6(150) |
789 |
238 |
555 |
733 |
210 |
500 |
350 |
|
8(200) |
875 |
263 |
605 |
795 |
230 |
600 |
380 |
|
10(250) |
1095 |
328 |
735 |
955 |
250 |
400 |
465 |
|
12(300) |
1178 |
365 |
788 |
1018 |
270 |
500 |
485 |
|
14(350) |
1300 |
390 |
910 |
1140 |
290 |
500 |
534 |
|
16(400) |
1370 |
440 |
980 |
1210 |
310 |
500 |
622 |
|
18(450) |
1483 |
460 |
1033 |
1283 |
330 |
500 |
622 |
|
20(500) |
1595 |
526 |
1145 |
1395 |
350 |
700 |
658 |
|
24(600) |
1685 |
623 |
1235 |
1485 |
390 |
500 |
730 |
Main connection size（CLASS 900）
|
DN |
A |
B |
C |
D |
L |
ΦW |
H |
|
in/mm |
|||||||
|
6(150) |
789 |
238 |
555 |
733 |
225 |
500 |
340 |
|
8(200) |
936 |
293 |
666 |
856 |
275 |
400 |
464 |
|
10(250) |
1130 |
345 |
770 |
990 |
325 |
400 |
464 |
|
12(300) |
1260 |
378 |
870 |
1100 |
375 |
400 |
520 |
|
14(350) |
1373 |
456 |
983 |
1213 |
425 |
500 |
623 |
|
16(400) |
1420 |
492 |
1030 |
1260 |
475 |
500 |
623 |
|
18(450) |
1510 |
510 |
1120 |
1370 |
500 |
700 |
656 |
|
20(500) |
1670 |
590 |
1220 |
1470 |
575 |
800 |
656 |
|
24(600) |
1830 |
673 |
1380 |
1630 |
675 |
700 |
793 |
