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Custom Flange Butterfly Valve Concentric Type Gear Box Operation Supplier, Factories
Product Description
Product Overview & Specifications
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
Thick shell, heavy-type
High purity rubber, high wear resistance
Zero leakage standard
Various sizes in stock
Characteristics
Flanged butterfly valves stand out as a versatile fluid control solution, integrating structural innovation, operational efficiency, and reliable performance across diverse industrial scenarios. Their design combines the advantages of flanged end connections (secure installation, high-pressure adaptability) with the inherent benefits of butterfly valve mechanics (compactness, quick operation).
Key Advantages
1. Quarter-Turn Actuation
The disc rotates 90° to switch between fully open/closed positions, enabling fast operation (1-5 seconds for automated valves) compared to multi-turn flanged gate/globe valves (30+ seconds). This ensures quick emergency isolation, process switching, or flow regulation, minimizing downtime and improving system productivity.
2. Low Torque & Energy Efficiency
The streamlined disc design reduces fluid resistance and friction between the disc and seat, lowering actuation torque by 40-60% compared to flanged ball valves. This allows for smaller, energy-efficient actuators (electric, pneumatic, hydraulic) or effortless manual operation (handwheel/lever), reducing operational energy consumption and actuator costs.
3. Superior Flow Characteristics
Full-bore flanged butterfly valves offer a straight-through flow path with minimal pressure drop (Cv values up to 10,000), reducing pumping energy requirements for high-flow applications (e.g., water treatment, power plant cooling circuits). This translates to significant long-term energy savings, especially for continuous-operation systems.
4. Bidirectional Sealing Flexibility
Resilient-seated (EPDM, Viton, PTFE) or metal-seated designs provide bubble-tight, bidirectional sealing (ANSI/FCI 70-2 Class VI for resilient seats). Unlike some flanged valves that require directional installation, flanged butterfly valves seal reliably in both flow directions, simplifying system design and installation.
Packaging & Export
Standard export wooden case packaging.
Application Scenarios
The flanged butterfly valves are widely recognized for their compact structure, lightweight design, and cost-effectiveness, making them a preferred choice for fluid control systems across multiple industries. Their flanged end connection ensures secure, leak-tight installation via bolted attachment to matching flanges, enabling reliable operation in both low and high-pressure environments.
Material Specifications
| Body | Plate | Rotating Shaft | Bushing | Seat | Operating Temperature (°C) |
|---|---|---|---|---|---|
| Material Name | Electroplated Nodular Cast Iron | Material Name | Material Name | Material Name | - |
| Ductile Iron | Ductile Iron | Stainless Steel | 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 |
Dimensions
| 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 | 2 1/2" | 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 |
Frequently Asked Questions (FAQ)
What manufacturing standard and structural design does this valve follow?
This flanged butterfly valve is manufactured according to the EN593 standard and features a concentric structure made via precision investment casting.
What is the operating temperature range for this flange butterfly valve?
The standard operating temperature ranges from -20°C to 120°C. Depending on the selected seat material (e.g., Heat-Resistant EPDM or PTFE), it can handle temperatures from -45°C up to +150°C.
Does this valve support bidirectional sealing and zero leakage?
Yes, the valve features a bidirectional sealing design and achieves a zero leakage sealing grade standard.
How does the quarter-turn actuation improve efficiency?
The 90° rotation enables fast switching (1-5 seconds for automated valves), lowering actuation torque by 40-60% compared to ball valves and significantly reducing downtime and operational energy costs.
What actuation options are available?
The valve can be operated manually using a handle/lever, or integrated with smaller, energy-efficient electric, pneumatic, or hydraulic actuators.
How are these valves packaged for international shipping?
All valves are packed using standard export wooden cases to ensure optimal protection during international transit.
