Custom Flange Butterfly Valve Concentric Type Gear Box Operation Supplier, Manufacturer

Type: Concentric Resilient Seated

Series: D341X

Size: DN40-DN2000/2”-80”

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

Design standard: EN 593

Service: OEM&ODM

The flange butterfly valve is installed by precisely connecting the integral flange at both ends of the valve body with the pipeline flange and tightening the bolts. It has the advantages of stable structure, reliable sealing, and strong pressure bearing capacity.

Product Description

Technical 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 construction for enhanced durability and high-pressure adaptability.

⚙️ High Purity Rubber

Superior wear resistance and elastic recovery for long-term sealing performance.

💎 Zero Leakage

Standardized precision to ensure bubble-tight shut-off in both directions.

Flange Butterfly Valve Detail

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).

Product Characteristics

Key Advantages

  • Quarter-Turn Actuation: The disc rotates 90° to switch positions, enabling fast operation (1-5 seconds) for emergency isolation.
  • Low Torque & Energy Efficiency: Streamlined disc design reduces friction, lowering actuation torque by 40-60% compared to ball valves.
  • Superior Flow Characteristics: Straight-through flow path with minimal pressure drop, reducing pumping energy requirements.
  • Bidirectional Sealing: Resilient or metal-seated designs provide bubble-tight sealing in both flow directions.

Packaging & Delivery

Standard export wooden case packaging is used to ensure the safety of the valves during international transit.

Wooden Case Packaging

Application Scenarios

Flanged butterfly valves are widely preferred in water treatment, power plant cooling circuits, and general industrial fluid systems. Their secure bolted attachment ensures leak-tight performance in both low and high-pressure environments.

Material Specifications

Body Plate Rotating Shaft Bushing Seat Temp Range (°C)
Ductile Iron Ductile Iron Stainless Steel PTFE EPDM Rubber -45 ~ +135
Ductile Iron Stainless Steel Carbon Steel PTFE Hypalon -18 ~ +135
Aluminum Bronze Titanium Steel - - EPDM Rubber -45 ~ +135
Stainless Steel CF8M Stainless - - Neoprene -7 ~ +93
CF8M Stainless Carbon Steel - - NBR Rubber -12 ~ +82

Dimensions (DN50 - DN2000)

Dimension Diagram
DN L L1 D (PN1.0) D (PN1.6) D1 H H1 b n-Φd (1.0) n-Φd (1.6)
mm inch
502"10818012512515032683204-Φ184-Φ18
803"114180160160200363100224-Φ188-Φ18
1004"127180180180220396114228-Φ188-Φ18
1506"140180240240280453143248-Φ238-Φ23
2008"152270295295335578170268-Φ2312-Φ23
30012"1783804004104557312233212-Φ2312-Φ28
60024"26748072577082511284104820-Φ3020-Φ36

*Partial data shown. Full range up to DN2000 available upon request.

Frequently Asked Questions

What are the primary advantages of a flange butterfly valve?
They offer rapid quarter-turn actuation, low operational torque, superior flow with minimal pressure drop, and reliable bidirectional sealing.
What standards do these valves comply with?
These flanged butterfly valves are manufactured according to the EN593 standard with investment casting workmanship.
Can these valves handle bidirectional flow?
Yes, the resilient-seated and metal-seated designs provide bubble-tight sealing in both flow directions (Bidirectional Sealing).
What is the working temperature range?
The standard operating temperature is between -20°C and 120°C, depending on the specific seat materials chosen.
How is the valve operated?
The standard configuration uses a Handle/Lever, but the low-torque design also makes them compatible with electric or pneumatic actuators.
What materials are available for the valve seat?
Common seat materials include EPDM Rubber, Hypalon, Neoprene Rubber, NBR Rubber, and PTFE for chemical resistance.

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