The soft-seal centerline butterfly valve is typically used as a shut-off valve in pipeline systems, while also serving regulatory functions. It finds extensive applications in water supply, drainage, sewage treatment, irrigation, air conditioning, fire protection systems, as well as in chemical and energy industries.
Product Features:
1. Material
The valve body and handle are made of ductile iron {QT450-10), offering high strength and excellent corrosion resistance.
adaptable to various application scenarios, with options including nickel-plated ductile iron, ductile iron coated with nylon 11, and butterfly plates made of various stainless steels or aluminum-bronze; suitable for different applications, with valve seats available in EPDM, NBR, or fluororubber materials.
2. Design
Supports multi-standard flange connections, including those compliant with GB/T 9113, BS EN1092-1 PNG/10/16, ANSI B16.1 CLASS 125/150, JIS B211010K, AS2129 Table E, BS10 Table DVE, and other flange standards.
To meet various operational requirements, drive mechanisms such as manual handles, worm heads, signal worm heads, electric, or pneumatic drives are available; additionally, valve seats can be selected from vulcanized valve seats, backrest-insertion valve seats, or boot-type flexible valve seats.
3. Surface Treatment
For surface treatment, epoxy resin powder spraying (by immersion spraying or spray gun) is recommended, offering reliable corrosion resistance.
To meet stricter corrosion resistance requirements, the factory also offers butterfly plates coated with nylon 11. Nylon 11 is a thermoplastic, plant-based coating approved by the USDA for preventing microbial growth and exhibiting high corrosion resistance, making it suitable for chemical environments with stringent corrosion protection demands.
· The valve body and handle are made of ductile iron
· The valve shaft is made of stainless steel
·Epoxy resin powder spraying
·The disc plate is available in nickel-plated ductile iron.Various materials including stainless steel or aluminum-bronze
· The valve seat material can be selected from EPDM, NBR, or fluororubber.
Through-shaft, pinless butterfly valve
Nominal diameter DN | 0" | ° | 30° | 40” | B“ | 80 | 70° | 80" | sc |
hdh | mm |
2 | | 006 | 3 | 6 | 13 Two | 23 | 38 | 61 | 91 | 99 |
25° | 65 | 008 | 5 | Section | 22 | 39 | 6 | 103 | 154 | 70 |
3 | 80 | 07 | 8 | 6 | 34 | 61 | 100 | 158 | 28 | 861 |
4* | 100 | 028 | 15 | 31 | 67 | 20 | 19 | 35 | 472 | 519 |
5 | 12 | 043 | 25 | 53 | 15 | 205 | 339 | 53 | 804 | 84 Two |
6° | 150 | 089 | 29 | 2 | 12 | 222 | 365 | 611 | 98 | 13868 |
| 200 | 2 | pure white | 133 | 27 | 35 | 59 | 1002 | 837 | 1873 |
wide | 250 | 3 | 75 | 205 | 333 | 86 | 928 | 152 | 235 | 2901 |
Position | 300 | 3 | 132 | 361 | 682 | 90 | 1625 | 278 | 4439 | 5041 |
14° | 350 | 5 | 158 | 433 | 708 | 1187 | 1948 | 327 | 8020 | 8087 |
8” | 400 | 7 | 24 | 640 | 1045 | 757 | 283 | 4821 | 7875 | 9010 Two |
18" | 450 | 10 | 275 | 780 | 1226 | 2061 | 381 Two | 563 | 935 | 1067 |
20 | 500 | 12 | 359 | 980 | 1801 | 2892 | 4418 | 7386 | 12066 | 1305 |
24° | 600 | 19 | 468 | 122 | 2094 | 3520 | 577 | 9658 | 185779 | 18053 |
28 | 700 | 31 | 1568 | 348 | 5740 | 851 | 16824 | 96 | 30189 | 420 |
30" | 750 | 32 | 799 | 3811 | 7557 | 19Z7 | 7831 | Z758 | 41824 | 33088 |
