Product Introduction

The wafer PTFE-lined butterfly valve features a full fluoropolymer lining (PTFE or PFA) that isolates the metal body and internals from the flowing media. It ensures excellent chemical resistance, tight shutoff, and long service life, especially in corrosive or aggressive environments. The...

The wafer PTFE-lined butterfly valve features a full fluoropolymer lining (PTFE or PFA) that isolates the metal body and internals from the flowing media. It ensures excellent chemical resistance, tight shutoff, and long service life, especially in corrosive or aggressive environments. The lining can be extended to the flange surface, eliminating conventional gaskets.

To meet diverse control needs, YEKE provides you with comprehensive drive options: standard handles for manual operation, turbine heads for large-caliber, labor-saving adjustment, as well as precise electric actuators and efficient pneumatic actuators for automated control.

Key Features
Complete Fluoropolymer Lining
The interior body, disc edge, and flow path are fully lined with PTFE / PFA to protect against corrosive media. 
Liner as Gasket / Face Seal
The PTFE liner can extend over the flange faces, replacing or reducing the need for separate flange gaskets in many installations.
Bubble-Tight Shutoff & Bi-Directional Seal
The valve achieves bubble-tight sealing in both flow directions, even in harsh chemical service. 
Low Operating Torque
The smooth, low-friction lining reduces torque requirements, making both manual and automatic actuation easier. 
Isolated Non-Wetted Components
All metal parts (body, stems, springs, bearings) remain isolated from fluid exposure, enhancing durability and reducing contamination risk. 
Wide Material & Temperature Options
Available in ductile iron, stainless steel, carbon steel bodies; compatible with many flange standards. Typical service range from –20 °C to +150 °C (–4 °F to +302 °F). 
Replaceable Liner / Seat System
Liner and sealing elements can be replaced in the field, minimizing downtime and life-cycle cost.

Typical Applications
Corrosive chemical and petrochemical processes
Acid / alkali handling systems
Chlorine, bleach, peroxide, brine, and aggressive media lines
Process utilities in chemical / pharmaceutical plants
Pulp & paper, mining, and fertilizer industries

Advantages
Exceptional chemical resistance and corrosion protection
Reliable, bubble-tight sealing even under aggressive conditions
Lower torque and energy cost in operation
No metal exposure to fluid—reduces contamination and corrosion
Simplified flange sealing (liner may act as gasket)
Long service life and industry-friendly maintenance