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China Suppliers Double Flange Butterfly Valve EPDM Seat - OEM/ODM Factory for DN40-DN2000 Sizes
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 size in stock
🔩 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
1 Simple structure, low cost
Few components, simple processing and assembly technology, and simple structure means easy to understand and maintain.
2 Excellent bidirectional sealing performance (soft seal)
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).
3 Extremely low flow resistance and high flow capacity
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.
4 Small size, light weight, easy installation
Compact design, compared to gate valves or globe valves of the same caliber, has a shorter structural length and much lighter weight.
📦 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
Q What is a flanged butterfly valve and how does it differ from a wafer butterfly valve?
A flanged butterfly valve features integrated flanges on both ends of the valve body, allowing it to be bolted directly to mating pipe flanges. This provides a more secure, self-supporting connection compared to a wafer butterfly valve, which relies on the surrounding pipe flanges to hold it in place. Flanged butterfly valves are better suited for high-pressure applications and situations where the valve may need to be removed independently from the pipeline.
Q What sealing grade does this flanged butterfly valve achieve?
This flanged butterfly valve achieves a zero leakage sealing grade, equivalent to ANSI Class VI. The soft-seal (rubber-lined) design ensures bidirectional sealing performance under normal temperature and low-to-medium pressure conditions, making it ideal for applications where tight shutoff is critical.
Q What is the operating temperature range for this valve?
This flanged butterfly valve is designed to operate within a temperature range of -20°C to 120°C. It is suitable for most standard industrial fluid control applications involving water, mild chemicals, HVAC systems, and similar media within this temperature range.
Q What industries and applications are flanged butterfly valves commonly used in?
Flanged butterfly valves are widely used across industries including water treatment and distribution, HVAC and air conditioning water systems, fire protection systems, chemical processing, food and beverage production, power generation, and general industrial pipelines. Their compact size, lightweight design, and reliable sealing make them a preferred choice for both low and high-flow scenarios.
Q What standard does this flanged butterfly valve comply with?
This flanged butterfly valve is manufactured in compliance with the EN593 standard, which is the European standard for industrial valves governing butterfly valves for general-purpose industrial applications. This ensures the valve meets strict dimensional, material, and performance requirements recognized internationally.
Q How is the flanged butterfly valve operated, and can it be automated?
This valve is operated via a handle or lever, enabling quick and easy quarter-turn (90°) open/close operation. For applications requiring remote or automated control, the valve body is compatible with pneumatic or electric actuators, allowing seamless integration into automated pipeline control systems.