Views: 0 Author: Site Editor Publish Time: 04-03-2026 Origin: Site
Design:Two-Piece U Type Butterfly Valve with PTFE Seat & PFA Coated CF8M Disc
Type: CBF04-TA01U OPERATION AND MAINTENANCE DOWNLOAD
Size: DN50-DN900
Body material: SS (CF8M)
Seat: PTFE
Disc: CF8M+PFA
Stem: SS431
Operating temperatures: -35℃—200℃(depending on pressure, medium and material)
Structure: U-Section
Operated: Pneumatic Actuator; Electric Actuator; Manual; Worm Gear...
Tianjin Worlds Valve Co., Ltd. presents a premium Two-Piece U Type Butterfly Valve engineered for severe corrosion resistance in demanding chemical, pharmaceutical, and high-purity applications. This valve combines a CF8M (AISI 316 Stainless Steel) body and disc with a PFA-wrapped disc and a PTFE seat, delivering exceptional protection against aggressive chemicals, acids, and solvents.
1. PFA-Wrapped CF8M Disc for Ultimate Corrosion Protection
Engineered to withstand the most aggressive media.
Complete Fluid Isolation: The disc is fully encapsulated with PFA (Perfluoroalkoxy), creating a seamless, non-porous barrier that protects the underlying CF8M stainless steel from corrosive attack, eliminating the risk of metal-to-media contact.
Superior Chemical Resistance: PFA offers exceptional resistance to a wide spectrum of aggressive chemicals, including strong acids (sulfuric, hydrochloric, nitric), bases, solvents, and oxidizing agents, outperforming many other fluoropolymer materials.
Non-Stick Surface: The PFA coating provides an extremely low-friction, non-stick surface that prevents media adhesion, scale buildup, and contamination, ensuring consistent performance and easy cleaning in high-purity applications.
2. PTFE Seat for Bubble-Tight Sealing & Chemical Inertness
Delivers reliable shut-off with minimal maintenance.
Zero-Leakage Performance: The precision-machined PTFE (Polytetrafluoroethylene) seat provides exceptional sealing integrity, achieving bubble-tight shut-off (Class VI) even under low-pressure conditions.
Wide Chemical Compatibility: PTFE is chemically inert to virtually all industrial chemicals, making it suitable for handling corrosive and high-purity media without risk of degradation or media contamination.
Low Torque Operation: The inherent lubricity of PTFE reduces friction between the disc and seat, resulting in smooth operation and lower actuation torque requirements.
3. Two-Piece Body Construction for Easy Maintenance
Designed for serviceability in critical process lines.
Quick Disassembly: The two-piece body design allows the valve to be easily disassembled for inspection, cleaning, or seat replacement without removing the entire valve from the pipeline.
Simplified Maintenance: Access to internal components is straightforward, reducing downtime and maintenance costs in processes requiring regular cleaning or media changeovers.
Enhanced Longevity: The ability to service the valve without pipeline removal extends overall system life and simplifies spare parts management.
4. U-Shaped Disc Design for Optimized Flow Characteristics
Engineered to minimize pressure drop and improve control.
Reduced Flow Resistance: The U-shaped disc profile creates a streamlined flow path, reducing turbulence and pressure drop compared to conventional disc designs, contributing to system energy efficiency.
Improved Flow Modulation: The optimized disc geometry provides more linear flow control characteristics, making it suitable for both on/off and throttling applications.
Cavitation Mitigation: The design minimizes cavitation risk in high-velocity applications, protecting downstream equipment.
5. Premium CF8M Stainless Steel Construction
Built on a foundation of corrosion-resistant materials.
All-CF8M Body & Disc Base: The valve body and disc substrate are cast from CF8M (AISI 316 Stainless Steel), offering excellent mechanical strength, pitting resistance, and durability in corrosive environments.
Epoxy-Coated Exterior (Optional): For additional protection against atmospheric corrosion in harsh plant environments, an epoxy coating can be applied to the exterior surfaces.
Stainless Steel Stem: The stem is manufactured from high-grade stainless steel (SS316) for reliable torque transmission and corrosion resistance.
6. Versatile Actuation Options
Adaptable to manual or automated control systems.
Manual Operation: Available with lever handle (small sizes) or worm gear operator (larger sizes) for simple, reliable manual control.
Automation Ready: ISO 5211 direct mounting pad allows for easy integration with electric or pneumatic actuators for remote and automated operation.
Limit Switch & Positioner Compatible: Can be equipped with position feedback devices for integration with PLC, DCS, or SCADA control systems.
Chemical Processing: Acid transfer lines, solvent handling, reactor feed and discharge
Pharmaceutical: High-purity water systems, API manufacturing, clean-in-place (CIP) circuits
Semiconductor: Ultra-pure chemical distribution, wet bench connections
Food & Beverage: Sanitary processing, CIP/SIP systems (with appropriate approvals)
Metal Finishing: Plating bath circulation, waste treatment
Pulp & Paper: Bleach plant chemical lines
The Two-Piece U Type Butterfly Valve with PTFE Seat and PFA-Wrapped CF8M Disc from Tianjin Worlds Valve Co., Ltd. represents a premium solution for severe corrosion applications where reliability, purity, and maintainability are critical. Its advanced material combination—PFA encapsulation over CF8M disc, PTFE seat, and all-CF8M body—provides exceptional protection against the most aggressive chemicals, while the two-piece construction simplifies maintenance and reduces downtime.
When your process demands the highest level of corrosion resistance backed by engineering excellence—choose Tianjin Worlds Valve Co., Ltd.
Contact us today for technical specifications, material certifications, or a customized quotation for your severe service application.
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