Double Flanged Butterfly Valve–Built for Heavy-Duty, High-Flow Systems

Introduction:

 

Customization: All materials, dimensions, and pressure ratings can be modified according to customer requirements

Type: CBF02-TF01--Product Catalog

 

Key Features & Advantages：

1. Double Flanged Connection–Maximum Rigidity

• Integral Flanges on Both Ends–The valve bolts directly to mating pipe flanges on both sides, providing the most secure and rigid connection available–no shifting under pipe stress.

• Easier Installation–With integral flanges, the valve is simpler to mount and align. No complicated centering procedures–just bolt it in place.

• Bidirectional Dead-End Service–Supports isolation and removal of pipe sections on either side while the valve remains closed and sealed–a capability wafer valves cannot provide.

 

2. Body Material–Ductile Iron (GGG40)

• High Strength–Offers approximately twice the tensile strength of gray iron, ideal for PN16 service and pressure surge conditions.

• Impact Resistance–The nodular graphite structure provides exceptional toughness, withstanding mechanical shock and vibration.

• Corrosion Protection–Combined with standard epoxy coating (250μm minimum), provides reliable corrosion resistance for water and wastewater service.

 

3. Disc Material–CF8M Stainless Steel (AISI 316)

• Superior Corrosion Resistance–Excellent resistance to pitting and crevice corrosion, particularly in chloride environments and seawater.

• Wide Chemical Compatibility–Suitable for water, wastewater, mild chemicals, acids, and alkalis.

• Hygienic and Non-Toxic–Safe for potable water, food processing, and pharmaceutical applications.

 

4. Seat Material–Vulcanized EPDM Rubber

• Zero Leakage Path–Chemically bonded to the body with no gaps or crevices between the seat and valve body, eliminating potential leak paths.

• Full Isolation of Metal–The vulcanized liner fully encapsulates all wetted metal surfaces, completely isolating the ductile iron body from the process fluid.

• Eliminates Flange Gaskets–The vulcanized seat extends to the outer edge of the valve body, serving as an integrated flange seal–one less component to fail.

 

5. Electric Actuator–Automated Control

• Quarter-Turn Operation–Rotates the disc 90° to open or close, enabling fast, precise flow control.

• On-Off or Modulating–Available in switch-type or modulating versions with 4-20 mA feedback for PLC and SCADA integration.

• Manual Override–Includes a handwheel for manual operation during power outages or maintenance.

 

Applications

This flanged butterfly valve is widely used across multiple industries:

• Water Supply & Distribution–Municipal water mains, pumping stations, distribution networks.

• Wastewater Treatment Plants–Sewage lines, treatment plants, effluent systems.

• HVAC Systems–Chilled water, hot water, cooling tower systems.

• Power Generation–Cooling water circuits, condenser systems.

• Chemical Processing–Corrosive fluids, acids, alkalis (with CF8M disc and vulcanized seat).

• Fire Protection Systems–Fire water lines, sprinkler systems.

• Desalination & Marine–Seawater handling with CF8M disc for corrosion resistance.

Quality Assurance & Certifications

We operate under a LRQA-audited ISO 9001:2015 quality management system. Every double flanged butterfly valve undergoes:

100% pressure testing (shell and seat) per EN 12266-1 or API 598.

Dimensional inspection against approved drawings.

Material verification with traceable mill test certificates (MTC).

Our certifications:

• ISO 9001:2015–Quality management system

• CE–EU safety compliance

• UKCA–UK conformity assessment

• WRAS–UK drinking water approval (available on request)

• ACS French health certification (available on request)

• DNV / ABS–Marine approval (available on request)

Design and manufacturing comply with EN 593, API 609, and AWWA C504 standards.

Why Choose Tianjin Worlds Valve?

 

Get in Touch – Customize Your Double Flanged Valve Today

Whether you need this PN16 configuration with electric actuation or a fully custom design with specialized materials, larger diameters, or different actuators, we're ready to build to your specification.

Send us your enquiry with:

• Required size and pressure rating

• Media type and operating temperature

• Preferred material combination

• Actuator type and control requirements

• Target quantity and destination port

Our sales team will respond within 24 hours with a competitive quotation and engineering proposal.

We warmly invite you to visit our factory in Tianjin. Let's build your valve together.

Email Sdress:   dekai@worldsvalve.com