Custom Double Flange Butterfly Valve EPDM Seat Manufacturers, Manufacturer
Product Description
| Valve Type: | Flange butterfly valve | Structure: | Concentric |
| Standard: | EN593 | Workmanship: | Investment casting |
| Sealing direction: | Bidirectional | Sealing grade: | Zero leakage |
| Temperature: | -20°C < T < 120°C | Operation: | Handle/Lever |
Characteristics
Flanged butterfly valves distinguish themselves as a highly versatile fluid control solution, uniting cutting-edge structural design, exceptional operational efficiency, and uncompromising reliability across countless industrial scenarios. Their unique design fuses the key advantages of flanged end connections robust installation and high-pressure capability with the natural benefits of butterfly valve mechanics, including space-saving compactness and swift quarter-turn operation, making them a top choice for diverse industry needs.
Advantages
Few components, simple processing and assembly technology, and simple structure means easy to understand and maintain.
Under low pressure and normal temperature conditions, soft seals can achieve excellent sealing effects, and the leakage level can usually reach zero leakage (ANSI Class VI).
The thickness of the butterfly plate is the only obstacle in the medium flow channel when the valve is fully opened, and it causes very little pressure drop on the medium. The advantages are obvious in systems that require maintaining smooth pipelines and reducing pumping energy consumption. Suitable for high flow applications, especially in water treatment, air conditioning water systems, water supply and drainage, and other high flow scenarios.
Compact design, compared to gate valves or globe valves of the same caliber, has a shorter structural length and much lighter weight.
Material Specifications
| Body | Plate | Rotating Shaft | Bushing | Seat | Operating Temperature (°C) |
|---|---|---|---|---|---|
| Ductile Iron | Electroplated Nodular Cast Iron | Material Name | PTFE | EPDM Rubber | -45～+135 (Short-time -50～+150) |
| Ductile Iron | Stainless Steel | Carbon Steel | PTFE | Hypalon | -18～+135 (Short-time -18～+149) |
| Aluminum Bronze | Titanium Steel | - | - | EPDM Rubber | -45～+135 (Short-time -50～+150) |
| Stainless Steel | CF8M Stainless Steel | - | - | Neoprene Rubber | -7～+93 (Short-time -7～+107) |
| CF8M Stainless Steel | Carbon Steel | - | - | NBR Rubber | -12～+82 (Short-time -12～+93) |
| Carbon Steel | CF8M Stainless Steel | - | - | Abrasion-Resistant Rubber | -10～+50 |
| - | - | - | - | Fluororubber | -23～+150 |
| - | - | - | - | Heat-Resistant EPDM Rubber | -20～+150 |
| - | - | - | - | PTFE | +10～+150 |
Dimension Parameters
| DN | L | L1 | D | D1 | H | H1 | b | n-φd | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | inch | PN1.0MPa | PN1.6MPa | PN1.0MPa | PN1.6MPa | ||||||
| 50 | 2" | 108 | 180 | 125 | 125 | 150 | 326 | 83 | 20 | 4-φ18 | 4-φ18 |
| 65 | 21/2" | 112 | 180 | 145 | 145 | 165 | 344 | 93 | 20 | 4-φ18 | 4-φ18 |
| 80 | 3" | 114 | 180 | 160 | 160 | 200 | 363 | 100 | 22 | 4-φ18 | 8-φ18 |
| 100 | 4" | 127 | 180 | 180 | 180 | 220 | 396 | 114 | 22 | 8-φ18 | 8-φ18 |
| 125 | 5" | 140 | 180 | 210 | 210 | 250 | 421 | 125 | 24 | 8-φ18 | 8-φ18 |
| 150 | 6" | 140 | 180 | 240 | 240 | 280 | 453 | 143 | 24 | 8-φ23 | 8-φ23 |
| 200 | 8" | 152 | 270 | 295 | 295 | 335 | 578 | 170 | 26 | 8-φ23 | 12-φ23 |
| 250 | 10" | 165 | 270 | 350 | 355 | 405 | 638 | 198 | 26 | 12-φ23 | 12-φ28 |
| 300 | 12" | 178 | 380 | 400 | 410 | 455 | 731 | 223 | 32 | 12-φ23 | 12-φ28 |
| 350 | 14" | 190 | 380 | 460 | 470 | 525 | 783 | 270 | 36 | 16-φ23 | 16-φ28 |
| 400 | 16" | 216 | 450 | 515 | 525 | 580 | 888 | 300 | 38 | 16-φ28 | 16-φ31 |
| 450 | 18" | 222 | 480 | 565 | 585 | 640 | 958 | 340 | 40 | 20-φ28 | 20-φ31 |
| 500 | 20" | 229 | 480 | 620 | 650 | 705 | 1005 | 355 | 42 | 20-φ28 | 20-φ34 |
| 600 | 24" | 267 | 480 | 725 | 770 | 825 | 1128 | 410 | 48 | 20-φ30 | 20-φ36 |
| 700 | 28" | 292 | 640 | 840 | 840 | 920 | 1476 | 478 | 53 | 24-φ30 | 24-φ36 |
| 800 | 32" | 318 | 640 | 950 | 950 | 1020 | 1533 | 525 | 58 | 24-φ33 | 24-φ39 |
| 900 | 36" | 330 | 750 | 1050 | 1050 | 1120 | 1655 | 585 | 65 | 28-φ33 | 28-φ39 |
| 1000 | 40" | 410 | 850 | 1160 | 1170 | 1340 | 1765 | 640 | 76 | 28-φ36 | 28-φ42 |
| 1200 | 48" | 470 | 850 | 1380 | 1390 | 1560 | 1995 | 755 | 85 | 32-φ39 | 32-φ48 |
| 1400 | 56" | 530 | 1000 | 1590 | 1590 | 1760 | 2310 | 910 | 103 | 36-φ42 | 36-φ48 |
| 1600 | 64" | 600 | 1000 | 1820 | 1820 | 1970 | 2595 | 1030 | 123 | 40-φ48 | 40-φ56 |
| 1800 | 72" | 697 | 1100 | 2020 | 2020 | 2180 | 2810 | 1140 | 135 | 44-φ48 | 44-φ56 |
| 2000 | 80" | 760 | 1100 | 2230 | 2230 | 2345 | 3100 | 1250 | 145 | 48-φ48 | 48-φ62 |
Packing
Standard export wooden case packaging
Application Scenarios
Flanged butterfly valves are universally acclaimed for their compact configuration, lightweight construction, and cost-efficiency, solidifying their position as a preferred fluid control solution across diverse industrial sectors. The flanged end connections facilitate secure, leak-free installation through bolted fixation to compatible flanges, ensuring consistent and reliable performance across both low and high-pressure operating conditions.
Frequently Asked Questions (FAQ)
The valve is designed and manufactured according to the EN593 standard with investment casting workmanship, ensuring optimal performance and compliance with European standard specifications.
This concentric flange butterfly valve features a bidirectional sealing direction and achieves a zero leakage standard under rated operating conditions.
The standard operating temperature range for the valve is -20°C < T < 120°C, depending on the specific seat material selected (e.g., EPDM, PTFE, NBR, or Fluororubber).
Body material options include Ductile Iron, Stainless Steel, Carbon Steel, CF8M, and Aluminum Bronze. Seat options include EPDM, Hypalon, Neoprene, NBR, Abrasion-Resistant Rubber, Fluororubber, and PTFE.
The default configuration features a manual Handle/Lever operation. Gear operators or automated actuators can also be adapted depending on operational requirements.
All products are packed in standard export wooden cases to protect against damage, corrosion, and impacts during sea and air transit.
