CBF02-TF02
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1. AWWA C504 Certification
Independently verified bubble-tight shutoff (tested at 1.1x max pressure)
Compliance with seat leakage, torque, and hydrostatic test protocols
2. Concentric Design Advantages
Zero friction shaft-to-disc contact for 60% lower operating torque vs. eccentric designs
Resilient EPDM/NBR seat installed on ductile iron body (no metal-to-media contact)
Maintenance-free operation: No bushings or complex seals to replace .

Component | Specification |
Body | Cast Iron Ductile Iron Carbon Steel Stainless Steel AL-Bronze |
Disc | PTFE Ductile Iron Carbon Steel Stainless Steel AL-Bronze |
Lining | EPDM NBR(BUNA-N) PTFE(Teflon) HEPDM FKM(VITON) Polychlorogrene Natural Rubber Silicone Rubber |
Shaft | 416SS MONEL K500 C92200 C63000 2507 2205 |
Pressure Rating | 10/16Bar |
Temperature Range | -15°C to 120°C (5°F to 250°F) |
Actuator | Worm Gear Electric Pneumatic |
End Connections | ISO5211(according customer needs) |
Certifications | ISO9001, WRAS, AWWA C504 C507, ACS, UKCA, CE, ABS and so on. |

Potable Water Distribution (Treatment plants to service lines)
Fire Hydrant Isolation (FM/UL approved for sprinkler systems)
Wastewater Pump Control (Waste-activated sludge, grit removal)
Reservoir Inlet/Outlet Management (SCADA-ready with ISO 5211 pad)

1. Expertise in OEM/ODM Services
As a trusted Concentric Butterfly Valve Factory, we offer customized solutions tailored to your specific requirements. From design to delivery, we ensure seamless execution.
2. Global Reach with Local Support
We provide timely delivery and dedicated customer support worldwide.
3. Competitive Pricing
Our efficient manufacturing processes and economies of scale enable us to offer high-quality valves at competitive prices.
4. Comprehensive After-Sales Service
We have a professional technical team that provides technical support, installation guidance, and maintenance services.

Welcome to purchase our AWWA C504 C207 Concentric Butterfly Valves. If you have any procurement needs, OEM/ODM or custom requirements, please contact our professional sales manager: dekai@worldsvalve.com
This 4”(DN100) butterfly valve from Tianjin Worlds Valve Co., Ltd. features a ductile iron body and CF8M disc,Replaceable EPDM seat, and electric actuator. The two stem configuration provides exceptional torsional strength, precise disc alignment, and extended service life. The electric actuator enables remote on/off or modulating control with ISO 5211 direct mounting and SCADA integration. Available DN50-DN300, PN10/PN16/Class 150, –20℃ to +120℃ . Suitable for water, seawater, HVAC, and mild chemical applications. Fully customizable. Manufactured by Tianjin Worlds Valve Co., Ltd., an ISO 9001 certified OEM supplier.
This 20-inch (DN500) lug butterfly valve from Tianjin Worlds Valve Co., Ltd. features a ductile iron body and disc, EPDM seat, and worm gear operator. The lug design enables bi-directional dead-end service at full rated pressure, ideal for large-diameter isolation points and maintenance shut-offs. The EPDM seat provides bubble-tight sealing for water, treated water, and mild chemical services from -20°C to +120°C. The worm gear delivers smooth, self-locking manual operation with an ISO 5211 top flange for actuator mounting. Rated PN10/PN16/Class 150. Fully customizable materials and actuation. Manufactured by an ISO 9001 certified OEM supplier with CE, UKCA, WRAS, ACS certifications available.
Lug butterfly valve with ductile iron body, CF8M disc, and field-replaceable soft EPDM seat. Dead-end service capable. Sizes DN50‑DN600, PN10/PN16/Class 150. Easy maintenance, corrosion resistant. OEM customizable. ISO 9001 certified.
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This comprehensive guide explains how to select a wafer butterfly valve based on pipeline size, flow rate, pressure rating, temperature, and media compatibility. It covers key features (compact design, 90° operation, low pressure drop), material selection for body/disc (ductile iron, stainless steel, aluminum bronze, duplex) and seat (EPDM, NBR, Viton, PTFE), plus installation best practices and maintenance tips. The article highlights Tianjin Worlds Valve Co., Ltd. as a reliable OEM/ODM manufacturer offering full customization, international certifications (ISO 9001, CE, UKCA, WRAS, ACS), and factory‑direct support for water, chemical, HVAC, marine, and industrial applications.
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