OEM Double Flange Butterfly Valve EPDM Seat Supplier, Manufacturers

Type: Concentric Resilient Seated

Series: D41X

Size: DN40-DN2000/2”-80”

Pressure rating: PN6/PN10/PN16/5K/10K/150LB

Design standard: EN 593

Service: OEM&ODM

Soft sealed flange butterfly valve is connected to the pipeline through bolts, used to control the on/off and flow regulation of fluids.

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
🛡️ Thick shell, heavy-type
⚙️ High purity rubber, wear resistance
💧 Zero leakage standard
📦 Various size in stock
Flange Butterfly Valve Detail
📋 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.

Valve Characteristics
🚀 Advantages
  • Simple structure, low cost: Few components, simple processing and assembly technology, and simple structure means easy to understand and maintain.
  • 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).
  • 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, causing minimal pressure drop. Ideal for high flow scenarios like water treatment and air conditioning systems.
  • Small size, light weight, easy installation: Compact design with shorter structural length and much lighter weight compared to gate or globe valves.
📦 Packing

Standard export wooden case packaging ensures the safety and integrity of the valves during international transit.

Valve Packing
🌐 Application Scenarios

Flanged butterfly valves are universally acclaimed for their compact configuration, lightweight construction, and cost-efficiency. The flanged end connections facilitate secure, leak-free installation through bolted fixation to compatible flanges, ensuring consistent performance across both low and high-pressure operating conditions.

Application 1 Application 2 Application 3
🛠️ Material Specifications
Body Plate Shaft Bushing Seat Temp (°C)
Ductile Iron Ductile Iron Stainless Steel PTFE EPDM -45 ~ +135
Ductile Iron Stainless Steel Carbon Steel PTFE Hypalon -18 ~ +135
Aluminum Bronze Titanium Steel - - EPDM -45 ~ +135
Stainless Steel CF8M - - Neoprene -7 ~ +93
Carbon Steel CF8M - - Fluororubber -23 ~ +150
📏 Dimensions
Dimension Drawing
DN L D (1.6MPa) D1 H H1 n-Φd
50mm 2" 108 125 150 326 83 4-Φ18
80mm 3" 114 160 200 363 100 8-Φ18
100mm 4" 127 180 220 396 114 8-Φ18
150mm 6" 140 240 280 453 143 8-Φ23
200mm 8" 152 295 335 578 170 12-Φ23
❓ Frequently Asked Questions
Q1: What is the main advantage of a flanged butterfly valve?
The flanged design provides a more secure and robust connection suitable for higher pressure applications compared to wafer types, while maintaining the compact and quick-operation benefits of butterfly valves.
Q2: Can these valves handle bidirectional flow?
Yes, our flanged butterfly valves are designed for bidirectional sealing, ensuring zero leakage regardless of the medium's flow direction.
Q3: What is the maximum operating temperature?
Standard configurations with EPDM or PTFE seats typically handle up to 120°C to 150°C. For specific high-temperature requirements, different seat materials like Fluororubber can be utilized.
Q4: Are these valves suitable for water treatment?
Absolutely. Their low flow resistance and high flow capacity make them perfect for water supply, drainage, and industrial water treatment systems.
Q5: What standards do these valves comply with?
Our valves are manufactured according to the EN593 standard, ensuring international compatibility and quality assurance for global projects.
Q6: Is maintenance difficult for flanged butterfly valves?
No, their simple structure with few moving parts makes them very easy to understand, access, and maintain, reducing long-term operational costs.

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