GB Fluoroplastic-Lined Sealing Butterfly Valve

Core Structure & Sealing Performance

This is a wafer-type, concentric (centerline) butterfly valve built to Chinese National Standards (GB). It features a full PTFE (fluoroplastic) lining on the valve body and disc, creating a corrosion-resistant, non-stick sealing surface ideal for aggressive chemical media. The PTFE lining provides excellent chemical resistance, while the centerline design ensures tight shutoff with minimal friction during operation.

Operation & Installation

Equipped with a worm gear actuator (handwheel-operated), it offers smooth, low-torque operation for precise flow control. The wafer-style body with lug holes allows for easy installation between pipe flanges, making it compatible with standard GB piping systems. The compact design saves space, suitable for limited-installation environments.

Key Advantages

Corrosion Resistance: PTFE lining resists acids, alkies, solvents, and other corrosive fluids, extending service life in harsh chemical processes.

Leak-Tight Sealing: The soft PTFE seal ensures bubble-tight shutoff, meeting low-emission requirements for environmental compliance.

Low Maintenance: Non-stick PTFE surface prevents media buildup, reducing cleaning and maintenance frequency.

Compliance: Manufactured to GB standards, ensuring compatibility with domestic and international projects using Chinese piping specifications.

Application Scenarios

Widely used in chemical processing, pharmaceutical, water treatment, and petrochemical industries for handling corrosive fluids, acids, alkalis, and other aggressive media.

Basic Parameters

Standard: GB (Chinese National Standard)

Connection Type: Wafer (Lug Style)

Structure: Centerline (Concentric)

Seal/Lining: PTFE (Fluoroplastic)

Operation: Worm Gear (Handwheel)

Temperature Range: -20°C to 180°C (depending on PTFE grade)