Product Overview

The D371F46/J Fluorine-Lined Wafer Butterfly Valve features advanced F46 fluoroplastic lining technology, offering exceptional corrosion resistance, especially suitable for harsh conditions involving strong acids, alkalis, and organic solvents. With wafer-type connection, compact structure, lightweight design and easy installation, it’s an ideal choice for chemical, pharmaceutical, electroplating and other industries.

Product Features

• F46 fluoroplastic lining– Excellent corrosion resistance against strong acids, alkalis and organic solvents
• Wafer-type structure– Compact size, lightweight, requires minimal installation space
• Bidirectional sealing– Zero leakage in both flow directions with reliable sealing performance
• Low flow resistance design– Streamlined flow channel with minimal resistance when fully open
• Easy operation– 90° rotation for opening/closing with low operating torque
• Long service life– Anti-aging lining ensures extended durability
• Multiple actuation options– Available with manual, electric or pneumatic operation

Technical Specifications

Working Principle

The D371F46/J Fluorine-Lined Wafer Butterfly Valve operates by rotating the stem to drive the disc through a 90° rotation for opening and closing. When open, the disc aligns parallel with the pipeline axis for smooth media flow; when closed, the disc becomes perpendicular to the axis, achieving sealing through tight contact between the lining and elastic sealing ring. The F46 fluoroplastic lining directly contacts corrosive media, providing superior corrosion protection.

Structural Features

• Full-body lining design– Complete F46 fluoroplastic coverage of valve interior and disc
• Triple-offset structure– Reduces friction, extends service life
• Multi-layer sealing system– Ensures tight sealing performance
• Blow-out proof stem– Safety design prevents accidental stem ejection
• Replaceable sealing components– Easy maintenance reduces operational costs

Application Fields

• Chemical industry: Transportation of strong corrosive media like sulfuric acid, hydrochloric acid, hydrofluoric acid
• Pharmaceutical industry: High-purity medicinal fluid delivery systems
• Electroplating industry: Electroplating solution circulation and control systems
• Environmental engineering: Wastewater and exhaust gas treatment systems
• Metallurgical industry: Pickling and electrolysis production lines
• Petrochemical industry: Control and regulation of corrosive media

Installation & Maintenance

Installation Requirements

• Thoroughly clean pipelines before installation to prevent welding slag from damaging the lining
• Use special flange gaskets for wafer-type installation to ensure sealing performance
• Tighten bolts evenly in diagonal sequence to prevent localized stress deformation of lining
• Ensure medium flow direction matches the arrow indication on valve body
• Do not allow the valve to bear pipeline weight or other external forces

Maintenance

• Regularly inspect valve sealing performance and address any leaks immediately
• Periodically operate valves that remain inactive for extended periods to prevent seizing
• Keep valve stems clean and apply special lubricant regularly
• Avoid severe impacts or external shocks to the valve
• Use original manufacturer parts when replacing seals to ensure performance