Plastic Lined Butterfly Control Valves: Precision, Durability & Corrosion Resistance

Plastic lined butterfly control valves are engineered for peak performance in demanding industrial environments. These valves combine cutting-edge sealing technologies with an advanced triple-offset (three-eccentric) design, delivering precise flow control, extended service life, and low operating torque. With options for soft sealing, hybrid soft-hard multi-level sealing, and full metal sealing, they adapt seamlessly to a wide range of media and temperature conditions.

Ideal for corrosive and high-pressure applications, these valves optimize energy efficiency while minimizing leakage and maintenance—making them indispensable in industries such as chemical processing, power generation, and wastewater treatment.

Key Advantages

1. Wide Size & Pressure Range

Available from DN15 to DN1000, these valves support multiple global pressure standards:

• PN6, PN10, PN16

• ANSI Class 150, 300, 600

This broad compatibility ensures seamless integration into both new and existing pipeline systems worldwide.

2. Exceptional Corrosion Resistance

Engineered to resist aggressive and corrosive media, the valves feature internal linings made from materials such as F46 (PTFE) and PFA, offering protection against acids, alkalis, and oxidizers.

Body materials include:

• WCB (Carbon Steel)

• CF8 (304 Stainless Steel)

• CF8M (316 Stainless Steel)

This allows for flexible configuration based on chemical and mechanical requirements.

3. Zero-Leakage Assurance

Meeting ANSI B16.104 Class VI leakage standards, these valves offer true zero-leakage performance. For high-pressure or high-temperature systems, Class IV or Class V metal sealing options provide enhanced durability and sealing reliability.

4. Advanced Three-Eccentric Structure

The triple-offset design reduces friction during valve operation, yielding:

• Extended sealing surface lifespan

• Stable torque requirements

• Quick-open response with equal-percentage flow characteristics

This makes them suitable for both on/off and modulating control.

5. High Control Precision

With a control ratio of up to 100:1, the valves offer outstanding modulation capability for accurate flow control, even in complex systems such as:

• Dosing applications

• Multi-phase flow regulation

• Chemical injection processes

6. Temperature and Packing Versatility

Multiple packing options—PTFE, RTFE, flexible graphite—help minimize fugitive emissions and ensure reliable sealing. Standard temperature range:

• High temp: up to 150°C

• Low temp: down to -30°C

Optional configurations can handle -40°C to 570°C for extreme environments.

Additional Performance Features

• Low Torque Operation: Triple-offset design minimizes friction and enables cost-effective actuation.

• Compact & Lightweight: Ideal for space-constrained installations.

• Standards-Compliant: Flanges conform to GB/T 12221-2005, ASME B16.10, API 609, ISO 5752.

• Versatile End Connections: RF, RJ, FM, lug, and wafer options available.

• Media Compatibility: Suitable for water, steam, gas, oil, air, and chemical fluids.

Application Industries

1. Chemical Processing

Handles corrosive media in:

• Acid/base production

• Solvent pipelines

• Dosing and blending systems

2. Water & Wastewater Treatment

Used for:

• Clean water supply regulation

• Wastewater flow control

• Disinfection and neutralization

3. Pharmaceutical & Food Industries

Sanitary and safe for:

• CIP/SIP systems

• Pharmaceutical batch control

• Food-grade flow regulation

4. Petrochemical, Oil & Gas

Perfect for:

• Offshore processing

• Refinery control loops

• Chemical injection under pressure

5. HVAC & Power Generation

Essential in:

• Steam and condensate control

• Thermal loop isolation

• Chilled water flow modulation

6. Mining & Metallurgy

Used in:

• Slurry control

• Acid leaching

• Dust and water suppression systems

Conclusion

Plastic lined butterfly control valves are the ideal solution for industries demanding high chemical resistance, precise modulation, and reliable performance under harsh conditions. Their triple-offset design, robust sealing options, and wide material compatibility ensure long-term operation with minimal maintenance.

From pharmaceuticals to petrochemicals, our valves support the world’s most critical flow control systems—driving efficiency, safety, and sustainability.

As a leading manufacturer in China, we are committed to providing innovative and dependable valve solutions for global industrial applications. Partner with us for advanced engineering, superior quality, and unmatched reliability in fluid control.Know more about Google SEO Directory