Water Treatment U Type Butterfly Valve | Nylon 11 Coated Disc | WRAS Approved Option

Introduction：

Water Treatment U Type Butterfly Valve | Nylon 11 Coated Disc | WRAS Approved Option

CBF02-TU03-Operation and Maintenance Manual DOWNLOAD

Key Features & Advantages:

1. WRAS Approved for Potable Water Applications

Engineered to meet the highest standards for drinking water safety.

• Full WRAS Compliance: This valve is available with WRAS (Water Regulations Advisory Scheme) approval, certifying that all materials in contact with drinking water meet stringent UK requirements for non-toxicity, taste, and odor.

• International Acceptance: WRAS approval is widely recognized in the UK, Middle East, and Commonwealth countries, facilitating project approvals and regulatory compliance.

• Traceable Certification: Each WRAS-approved valve is manufactured using certified materials with full documentation available for audit and verification purposes.

2. Nylon 11 Coated Disc for Superior Protection in Water Environments

The ductile iron disc is protected with high-performance Nylon 11 (Polyamide 11) coating—a material specifically selected for water treatment applications.

• Exceptional Corrosion Resistance: Nylon 11 forms a tough, pinhole-free barrier that protects the disc from rust, pitting, and galvanic corrosion in fresh water, seawater, and wastewater environments.

• FDA Compliant & Non-Toxic: Nylon 11 is FDA-compliant for food contact and safe for potable water applications, making it ideal for drinking water systems.

• Abrasion & Impact Resistance: The coating withstands wear from suspended solids and debris, significantly extending valve life in raw water and wastewater applications.

• Anti-Fouling Properties: The smooth, low-friction surface prevents biological growth, scale buildup, and sediment adhesion, maintaining sealing performance and reducing maintenance frequency.

3. Hydrodynamic U-Shaped Disc for Energy-Efficient Operation

Engineered to minimize pumping costs and optimize system performance.

• Reduced Pressure Drop: The innovative U-shaped disc profile reduces flow resistance by up to 20% compared to standard butterfly valve designs, lowering energy consumption and pumping costs over the valve's lifetime.

• Cavitation Mitigation: The optimized geometry minimizes turbulence and cavitation risk, protecting downstream equipment and reducing noise in high-flow applications.

• Improved Control Characteristics: The U-shape design provides stable, predictable flow modulation, making it suitable for both isolation and throttling duties in treatment processes.

4. Robust Ductile Iron Construction with Secure Flanged Connections

Built for strength and reliable performance in demanding water infrastructure.

• High-Strength Material: The valve body is cast from GGG40/500-7 Ductile Iron, offering excellent tensile strength, impact resistance, and durability for buried or exposed installations.

• Leak-Proof Flanged Design: Integral flanged ends (compliant with ANSI B16.5, EN 1092-1, or AS2129) provide a secure, bolted connection that withstands pipeline stress and ensures bubble-tight sealing.

• Epoxy-Coated Exterior: The body is protected with a durable epoxy coating (standard 250μm) for additional corrosion resistance in aggressive water treatment environments.

Standard:

Parameter	Specification
Model	U-Section Butterfly Valve(CBF02-TU03)
Sizes	DN50-DN3000
Pressure Rating	PN10/16/150LB/JIS10K
Design	EN593  BS5155  EN1092  ISO5211
Testing	ISO5208  EN12266-1
TOP Flange	ISO5211 (according to customer’s needs)
Face to Face	EN558-1 DIN3202 ISO5752 BS5155
Body	Ductile Iron...
Disc	DI SS Aluminum Bronze C95400 2205 2207 ...
Seat	EPDM,NBR,FKM,PTFE...
Stem	SS410/420/431...

Why Choose Tianjin Worlds Valve as Your Water Treatment Valve Partner?  

• Specialized in Large-Diameter Valves: We possess the engineering expertise and manufacturing capacity to produce high-quality large-diameter valves (DN600 to DN2000+) that meet the rigorous demands of major infrastructure projects.

• Material Selection Expertise: Our knowledge of advanced materials like C95400 Aluminum Bronze ensures we can recommend and supply the optimal disc material for your specific media and environmental conditions.

• Global OEM Experience: We have a proven track record of supplying valves to partners in over 50 countries, understanding the importance of consistent quality, reliable lead times, and clear communication.

• Certified Quality Assurance: As an ISO 9001 certified manufacturer, we maintain strict quality controls from incoming material inspection to final pressure testing and documentation.

Typical Applications:

1. Specialized Expertise in Water Industry Valves

2. Certified Quality for Global Water Projects

3. OEM/ODM Flexibility for Project-Specific Requirements

4. Proven Track Record in Water Infrastructure

5. Cost-Effective Solutions Without Compromise

Conclusion:

The Water Treatment U Type Butterfly Valve with Nylon 11 Coated Disc from Tianjin Worlds Valve Co., Ltd. represents a specialized solution for the unique challenges of water and wastewater applications. Its innovative U-shaped disc design reduces energy consumption and improves system efficiency, while the advanced Nylon 11 coating ensures long-term protection against corrosion, abrasion, and biological fouling.

With WRAS-approved options for potable water safety, robust ductile iron construction, and flexible OEM customization capabilities, this valve delivers the reliability, compliance, and performance that water industry professionals demand.

When your project requires a high-performance butterfly valve engineered specifically for water treatment—backed by international certifications and decades of manufacturing expertise—choose Tianjin Worlds Valve Co., Ltd.