10 Inch PTFE Lined Lug Butterfly Valve–Zero Metal Contact, Maximum Corrosion Resistance

Introduction:

 

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

Type: CBF04-TL01--Product Catalog  

Key Features & Advantages：

1. Full PTFE Encapsulation–Zero Metal Contact

• Complete Metal Isolation–Both the seat and disc are fully encapsulated in virgin PTFE, ensuring that no metal surface contacts the process media. This eliminates corrosion, pitting, and contamination risks entirely.

• Unmatched Chemical Resistance–PTFE withstands a pH range of 0 to 14, resisting 98% sulfuric acid, hydrochloric acid (≤30% concentration), chlorine, caustic soda, and virtually all organic solvents.

• Bubble-Tight Shut-Off–The PTFE seat and disc create a resilient sealing interface that delivers bubble-tight shut-off certified to API 598, with zero leakage even in demanding service conditions.

 

2. Lug Type Design–Structural Integrity & Dead-End Service

• Independent Pipeline Mounting–Threaded lugs on the valve body allow each side to be bolted independently to pipe flanges. This enables dead-end service–the valve can be installed at the end of a pipeline or used to isolate a section for maintenance.

• Simplified Maintenance–The valve can be removed from one side without depressurizing or shutting down the entire pipeline–a critical advantage in chemical plants where downtime is costly.

• Superior Rigidity–The lug design provides greater structural strength than wafer types, withstanding pipe stress, vibration, and thermal expansion.

 

3. Body Material–Ductile Iron (GGG40)

• High Strength–Ductile iron offers approximately twice the tensile strength of gray iron, providing reliable performance under pressure surges.

• Impact Resistance–The nodular graphite structure withstands mechanical shock and pipeline vibration.

• Corrosion Protection–Combined with standard epoxy coating (250μm minimum), the body resists atmospheric corrosion in chemical environments.

 

4. PTFE Seat–Inert & Durable

• Chemically Inert–PTFE is non-reactive with virtually all industrial chemicals, making it the material of choice for aggressive and high-purity service.

• Wide Temperature Range–Maintains sealing properties from -50℃ to +200℃.

• Low Friction–PTFE's low coefficient of friction ensures smooth disc operation and reduced actuator torque.

 

5. PTFE-Encapsulated Disc–Full Protection

• Complete Encapsulation–The ductile iron core is fully encapsulated in PTFE, ensuring zero metal exposure to the process fluid.

• Corrosion Immunity–The PTFE layer protects the disc from chemical attack, extending service life significantly.

• Sterile Integrity–The non-porous PTFE surface prevents contamination, making it suitable for pharmaceutical and food-grade applications.

 

Typical Applications

PTFE lined lug butterfly valves are engineered for critical applications requiring zero metal contact, corrosion immunity, and sterile integrity:

 

Quality Assurance & Certifications

Every PTFE lined lug butterfly valve undergoes rigorous quality control at our LRQA-audited ISO 9001:2015 certified facility:

• 100% pressure testing (shell and seat) per API 598–with bubble-tight shut-off certified.

• 30KV electric spark testing–verifies PTFE lining integrity with zero penetration.

• Dimensional inspection against approved drawings.

• Material verification with traceable mill test certificates (MTC). 

Key certifications:

ISO 9001:2015–Quality management system (certified by LRQA)

CE–EU safety compliance

UKCA–UK conformity assessment

WRAS–UK drinking water approval

ACS–French health certification

DNV / ABS–Marine approval

Design and manufacturing comply with ASME B16.34, API 609, and API 598.

 

Why Choose Tianjin Worlds Valve?

The advantages and what it means for you:

• LRQA-Certified Quality－Our ISO 9001:2015 certification is issued by LRQA, a globally trusted certification body–demonstrating our commitment to continuous improvement and risk management.

• Virgin PTFE, Never Recycled－We use 100% virgin PTFE for all linings and encapsulations–never recycled materials–ensuring maximum purity, chemical resistance, and mechanical integrity.

• PTFE Lining Specialists－We have extensive experience manufacturing PTFE lined butterfly valves for chemical, pharmaceutical, and semiconductor industries worldwide.

• 19+ Years Export Experience－Smooth logistics and after-sales support to 50+ countries – including Europe, Americas, Middle East, and Southeast Asia.

• Full Customization－From DN50 to DN900, any flange standard (ANSI, DIN, JIS, BS), any coating color (RAL), any actuator – we build to your spec..

• 100% Traceability－Every valve comes with material certificates and pressure test reports – no exceptions.

• Quick Turnaround－Dedicated project manager; typical lead time 15–40 days. Factory visits welcome in Tianjin.

 

Get in Touch–Customize Your PTFE Lined Valve Today

Whether you need this 10-inch Class 150 configuration, a different size, automated actuation, or a complete valve package for a large-scale chemical project – we're ready to build to your specification.

Simply send us:

• Required size and pressure rating

• Media type, temperature, and concentration

• Preferred body material (ductile iron, carbon steel, stainless steel, etc.)

• Actuator type (manual, worm gear, electric, pneumatic, hydraulic)

• Flange standard and drilling (ANSI, DIN, JIS, BS)

• Target quantity and destination port

 

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

We also welcome factory visits – come see how we manufacture your valves in Tianjin, China.