Introduction
Plastic lined butterfly control valves are engineered to deliver outstanding performance in demanding industrial environments. By combining advanced sealing technologies with a unique three-dimensional eccentric design, these China Control Valves provide precise flow control, enhanced durability, and reduced operating torque. Featuring options like soft seals, hybrid soft-hard multi-level sealing, and full metal sealing, they adapt to a wide range of media and temperature conditions.
Designed to optimize energy efficiency and extend service life—especially in corrosive and high-pressure applications—plastic lined butterfly valves ensure reliable operation, minimal leakage, and long-term value across industries such as chemical processing, power generation, and wastewater treatment.
Key Advantages of Plastic Lined Butterfly Control Valves
1. Wide Size and Pressure Range
Available from DN15 to DN1000, these valves suit both small and large pipelines. They support multiple pressure classes, including:
- PN6, PN10, PN16
- ANSI Class 150, 300, and 600
- This versatility enables seamless integration across global piping standards.
2. Exceptional Corrosion Resistance
The plastic linings—commonly F46 (PTFE) and PFA—offer excellent protection against acids, alkalis, and oxidizing agents. Valve bodies are available in:
- WCB (carbon steel)
- CF8 (304 stainless steel)
- CF8M (316 stainless steel)
- allowing tailored resistance and mechanical strength for varied environments.
3. Leak-Free Performance
Meeting ANSI B16.104 Class VI leakage standards, these valves ensure zero leakage for applications demanding absolute sealing integrity. For higher durability under elevated pressures and temperatures, metal sealing options comply with Class IV or V leakage requirements.
4. Advanced Three-Eccentric Design
The innovative three-eccentric structure minimizes friction between disc and seat, resulting in:
- Extended sealing surface life through reduced wear
- Stable, consistent opening and closing torque
- Quick opening with equal-percentage flow characteristics, ideal for throttling and on-off control
5. High Precision and Control Adjustability
Offering control ratios up to 100:1, these valves provide exceptional modulation for:
- Precise dosing
- Multi-phase flow control
- Chemical injection and treatment
6. Reliable Packing and Broad Temperature Range
Available packing materials include PTFE, RTFE, and flexible graphite to ensure tight sealing and reduce fugitive emissions. Temperature adaptability ranges from:
- Low: -30°C (standard), down to -40°C (optional)
- High: up to 150°C standard, with specialized designs extending up to 570°C
Additional Performance Features
- Low Torque Operation: Lightweight design and eccentric geometry reduce actuation effort, supporting cost-effective manual or automated operation.
- Compact and Lightweight: Facilitates installation in tight spaces.
- Multi-Standard Compatibility: Flange connections meet GB/T 12221-2005, ASME B16.10, API 609, and ISO 5752.
- Versatile End Connections: RF (raised face), RJ (ring joint), FM (flat face), lug, and wafer types available for diverse piping needs.
- Wide Media Compatibility: Suitable for water, steam, oil, air, gas, and chemical fluids.
Typical Applications
1. Chemical Processing
Handling corrosive chemicals, acid-base mixtures, and solvents for:
- Acid production
- Chemical dosing
- Process pipeline control
2. Water & Wastewater Treatment
Flow regulation and backflow prevention in municipal and industrial water systems, including:
- Clean water supply
- Wastewater management
- Disinfection and neutralization
3. Pharmaceutical and Food Industries
Ensuring sanitary operation in sensitive environments such as:
- Clean-in-place (CIP) and sterilize-in-place (SIP) systems
- Ingredient mixing and batching
- Food-grade fluid control
4. Petrochemical, Oil & Gas
Corrosion-resistant sealing for high-pressure, harsh environments:
- Chemical injection
- Offshore processing
- Refinery flow control
5. HVAC and Power Generation
Controlling steam and cooling water to enhance energy efficiency:
- Steam distribution
- Condensate and chilled water flow
- Process loop isolation
6. Mining and Metallurgy
Managing abrasive and corrosive fluids in:
- Acid handling for hydrometallurgy
- Slurry control in mineral processing
- Dust suppression and wash water systems
Conclusion
Plastic lined butterfly control valves are a robust solution for modern industrial fluid control challenges, delivering superior chemical resistance, precise flow modulation, and long service life. Their advanced three-eccentric design and flexible sealing technologies minimize maintenance while maximizing efficiency.
From pharmaceuticals to petrochemicals, these valves meet the demanding needs of corrosive, high-pressure environments with reliable, leak-tight performance. As industries move toward greater automation and sustainability, plastic lined butterfly valves will remain indispensable components in next-generation fluid management systems.
As a leading manufacturer in China, we are dedicated to continuous innovation, quality, and providing dependable valve solutions to customers worldwide. Know more about Google SEO Directory
Comments