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Product Description
Widely used in water supply and drainage as well as gas pipelines in industries such as food,
pharmaceuticals, chemicals, petroleum and power, textiles, and papermaking, it serves to
regulate flow and shut off media, and also has the function of compensating for thermal
expansion and contraction of pipelines.
1.The butterfly disc adopts a streamlined and truss-type design, which can greatly reduce fluidresistance.
2.The sealing valve seat is directly mounted on the butterfly disc and can be replaced withoutremoving the valve stem.
3.A single-eccentric structure is adopted to reduce the frictional resistance of the sealing valveseat.
4.With an overall epoxy resin powder coating, the valve can be applied to different media simplyby replacing the material of the sealing valve seat.
5.Featuring a novel, reasonable and unique structure, as well as light weight, easy operation andquick opening/closing, the telescopic butterfly valve not only functions as flow regulation and
medium shutoff, and compensates for pipeline thermal expansion and contraction caused bytemperature differences, but also facilitates valve installation, replacement and maintenance.
Technical Parameters
1.Flanged connection shall comply with the standards GB/T 17241.1-2024 and GB/T9124.1-2019.
2.Strength and sealing tests shall comply with the standard GB/T 13927-2022.
3.Relevant technical parameters are listed in Table 1, materials of main components in Table 2,overall dimensions in Table 3
Table 1:Technical Parameters Table | ||||||||||||
PN | 1.0MPa | 1.6MPa | 2.5MPa | |||||||||
Body Test | 1.5MPa | 2.4MPa | 3.75MPa | |||||||||
Seal Test | 1.1MPa | 1.76MPa | 2.75MPa | |||||||||
Temperature | 0℃~80℃ | |||||||||||
Actuation Method | Worm gear,pneumatic,hydraulic,electric,etc. | |||||||||||
Multiple Models Available | D342X、D642X、D742X、D942X,etc | |||||||||||
Table 2:Main Component Materials | ||||||||||||
Part Name | Materials | |||||||||||
Body,Disc,York | Ductile Iron/Cast Steel | |||||||||||
Plate,Gland,Cover | Ductile Iron/Cast Steel | |||||||||||
Seat Sealing Surface | Copper Alloy/Stainless Steel | |||||||||||
Sealing Ring | NBR/EPDM | |||||||||||
Stem | Stainless Steel | |||||||||||
Fasteners | Carbon Steel/Stainless Steel | |||||||||||
Table3:Overall Dimensions mm | ||||||||||||||||
DN | φD | φK | N-φ | L | H1 | H2 | ||||||||||
PN10 PN16 | PN25 | PN10 | PN16 | PN25 | PN10 | PN16 | PN25 | |||||||||
100 | 220 | 235 | 180 | 190 | 8-φ19(18) | 8-φ23(22) | 127±2 | 110 | 160 | |||||||
150 | 285 | 300 | 240 | 250 | 8-φ23(22) | 8-φ28(26) | 140±2 | 145 | 200 | |||||||
200 | 340 | 360 | 295 | 310 | 8-φ23(22) | 12-φ23(22) | 12-φ28(26) | 152±2 | 170 | 290 | ||||||
250 | 395 | 405 | 425 | 350 | 355 | 370 | 12-φ23(22) | 12-Φ28(26) | 12-Q31(30) | 165±2 | 235 | 330 | ||||
300 | 445 | 460 | 485 | 400 | 410 | 430 | 12-φ23(22) | 12-φ28(26) | 16-031(30) | 178±3 | 255 | 355 | ||||
350 | 505 | 520 | 555 | 460 | 470 | 490 | 16-Φ23(22) | 16-Q28(26) | 16-034(33) | 190±3 | 290 | 380 | ||||
400 | 565 | 580 | 620 | 515 | 525 | 550 | 16-φ28(26) | 16-φ31(30) | 16-φ37(36) | 216±3 | 335 | 435 | ||||
450 | 615 | 640 | 670 | 565 | 585 | 600 | 20-φ28(26) | 20-Φ31(30) | 20-37(36) | 222±3 | 360 | 465 | ||||
500 | 670 | 715 | 730 | 620 | 650 | 660 | 20-φ28(26) | 20-Φ34(33) | 20-037(36) | 229±3 | 410 | 510 | ||||
600 | 780 | 840 | 845 | 725 | 770 | 770 | 20-φ31(30) | 20-Φ37(36) | 20-41(39) | 267±4 | 475 | 650 | ||||
700 | 895 | 910 | 960 | 840 | 840 | 875 | 24-φ31(30) | 24-Φ37(36) | 24-Φ44(42) | 292±4 | 525 | 680 | ||||
800 | 1015 | 1025 | 1085 | 950 | 950 | 990 | 24-Q34(33) | 24-Φ41(39) | 24-Φ50(48) | 318±4 | 595 | 750 | ||||
900 | 1115 | 1125 | 1185 | 1050 | 1050 | 1090 | 28-φ34(33) | 28-41(39) | 28-50(48) | 330±5 | 640 | 805 | ||||
1000 | 1230 | 1255 | 1320 | 1160 | 1170 | 1210 | 28-Φ37(36) | 28-Φ44(42) | 28-57(56) | 410±5 | 695 | 880 | ||||
1200 | 1455 | 1485 | 1530 | 1380 | 1390 | 1420 | 32-Q41(39) | 32-Φ50(48) | 32-57(56) | 470±6 | 815 | 990 | ||||
1400 | 1675 | 1685 | 1755 | 1590 | 1590 | 1640 | 36-44(42) | 36-φ50(48) | 36-Q62 | 530±6 | 960 | 1155 | ||||
1600 | 1915 | 1930 | 1975 | 1820 | 1820 | 1860 | 40-50(48) | 40-φ57(56) | 40-Q62 | 600±6 | 1060 | 1305 | ||||
1800 | 2115 | 2130 | 2195 | 2020 | 2020 | 2070 | 44-Φ50(48) | 44-Φ57(56) | 44-φ70 | 670±8 | 1195 | 1450 | ||||
2000 | 2325 | 2345 | 2425 | 2230 | 2230 | 2300 | 48-Φ50(48) | 48-Φ62 | 48-φ70 | 760±8 | 1320 | 1650 | ||||
2200 | 2550 | 2555 | 2640 | 2440 | 2440 | 2510 | 52-956 | 52-Φ62 | 52-φ70 | 800±8 | 1495 | 1765 | ||||
2400 | 2760 | 2765 | 2850 | 2650 | 2650 | 2720 | 56-956 | 56-Φ62 | 56-70 | 850±10 | 1590 | 1870 | ||||
2600 | 2960 | 2965 | - | 2850 | 2850 | - | 60-Φ56 | 60-62 | - | 900±10 | 1760 | 2030 | ||||
2800 | 3180 | 3210 | 3070 | 3100 | - | 64-Φ56 | 64-Φ62 | - | 950±10 | 1865 | 2170 | |||||
3000 | 3405 | 3450 | - | 3290 | 3330 | - | 68-Φ62 | 68-Φ70 | 二 | 1000±10 | 1952 | 2235 | ||||
3200 | 3610 | 3650 | - | 3495 | 3530 | 72-Φ62 | 72-Φ70 | - | 1100±10 | 2250 | 2562 | |||||
3400 | 3815 | 3850 | - | 3700 | 3730 | - | 76-Φ62 | 76-Φ70 | - | 1200±10 | 2333 | 2666 | ||||
3600 | 4020 | 4050 | - | 3905 | 3930 | - | 80-Φ62 | 80-Φ70 | 1200±10 | 2538 | 2827 | |||||
3800 | 4260 | - | - | 4130 | - | 二 | 84-φ70 | - | - | 1200±10 | 2750 | 3030 | ||||
4000 | 4460 | - | - | 4330 | - | 88-φ70 | 1300±10 | 2940 | 3220 | |||||||
Possible Faults | Causes | Solutions | ||
Stem Leakage | Packinggland nut loose | Tighten thenut evenly to compress the packing | ||
Insuffident packingcompression | Add or replace packing material | |||
Packing worn or aged | Replace with new packing | |||
DscSealing SurfaceLeakage | Contamination on sealing surface | Clean away contaminants thoroughly | ||
Damaged sealingsurface | Refinish or replace the sealing suface | |||
Inadequate actuator stroke | Readjust actuator limit | |||
Valve Fails to Open/Close | Bent stem | Straighten or replace the stem | ||
Foreign matter between disc and body sealing surface | Remove the foreign matte | |||
Professional Valve Manufacturer | Integrated Manufacturing
We select high-quality raw materials according to product specifications and international standards. All incoming materials are carefully inspected to ensure chemical composition, mechanical properties and traceability.
Valve surfaces are professionally shot blasted to remove rust, scale and impurities. Protective coatings are then applied according to customer requirements, providing excellent corrosion resistance and a durable surface finish.
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