PTFE Lined Lug Type Butterfly Valve

PTFE Lined Lug Type Butterfly Valve Description

A PTFE lined lug type butterfly valve is a quarter-turn valve that uses a rotating disc to control the flow of a fluid. The disc is lined with PTFE (polytetrafluoroethylene), a highly inert and non-stick material that makes the valve suitable for handling a wide range of corrosive and abrasive fluids.

The lug type design of the valve allows it to be easily bolted to a pipeline. The valve is also equipped with a lever for manual operation, or it can be automated with an actuator.

PTFE lined lug type butterfly valves are commonly used in a variety of industries, including chemical processing, petrochemical, food and beverage, and pharmaceutical. They are well-suited for applications where high corrosion resistance and low flow resistance are required.Contact us today for expert consultation.

PTFE Lined Lug Type Butterfly Valve Specification

 

PTFE Lined Lug Type Butterfly Valve Features:

•  Valve body is made of carbon steel or stainless steel materials. Lug-style end connections have threaded holes that align with piping flanges for easy installation.

•  Interior of valve body and disc are lined with a PTFE liner that is bonded to the substrate. PTFE provides excellent chemical compatibility and can handle temperatures up to 500°F.

•  Disc is often made of stainless steel for strength and rigidity. A stainless shaft connects the disc to the manual or automated actuator.

•  The PTFE liner enables tight shut-off and zero leakage across the disc and seat interface. This maintains product separation and prevents dangerous emissions.

•  Size range is typically 2” to 48” diameter valves with pressure ratings of 150 psi or higher. Suitable for a wide range of fluids.

•  Quarter-turn operation enables fast opening and closing. The lightweight disc requires less operating torque.

•  Suitable for corrosive chemicals, polymers, water treatment, acids, caustics, mining slurries, and other abrasive or viscous fluids.

•  Routine maintenance checks for liner wear, leak tightness, disc alignment, and smooth operation are advised. Liner replacement may be required periodically.

PTFE Lined Lug Type Butterfly Valve​​​​​​​ Advantages:

•  Excellent corrosion and chemical resistance – The PTFE liner provides outstanding resistance to a wide range of corrosive fluids and vapors, including acids, caustics, halogens, and amines. This allows use with aggressive chemicals.

•  Abrasion resistance – The slick PTFE liner minimizes damage from solids and slurries flowing through the valve. This maintains longevity in applications with abrasive media.

•  Temperature resistance – PTFE liners enable use at temperatures from cryogenic up to 500°F continuously. The valves can also handle short term peaks up to 600°F.

•  Low torque operation – The self-lubricating PTFE liner allows easy quarter-turn operation and smooth cycling of the valve with lower actuation torque required.

•  Tight shut-off – The resilient PTFE seat provides class VI shut-off per ANSI/FCI 70-2 for zero leakage and no fugitive emissions. This maintains product separation.

•  Cost effective – PTFE lined valves provide excellent value, outperforming rubber and other liners in terms of durability, performance, and longevity.

•  Easy maintenance – The PTFE liner and seals can be replaced in-line after extended usage. No need to remove the valve or piping.

•  Custom engineered – Valves can be tailored in terms of materials, size, pressure rating, actuation, and other features for optimized performance per application.

PTFE Lined Lug Type Butterfly Valve​​​​​​​ Applications:

•  Chemical Processing – Used extensively in chemical plants to control flow of corrosive chemicals like acids, caustics, chlorine, polymers, and organic chemicals. The PTFE liner provides excellent corrosion resistance.

•  Water Treatment – Used to regulate injection of coagulants and flocculants for water clarification. Also used for isolation of filters and other equipment during maintenance. Handles abrasive slurries well.

•  Mining – Used to control and isolate flows of mineral slurries and corrosive acid mine drainage water. Protects against wear and leakage.

•  Petrochemical – Used in refineries and offshore platforms to control hydrocarbon streams at high temperatures. Provides tight shut-off to prevent fugitive emissions.

•  Pulp & Paper – Used to regulate flows of abrasive wood pulp slurries with fibrous content. Prevents erosion of valve internals.

•  Power Generation – Used in flue gas desulfurization systems to control slurry flows and in steam boiler blowdown lines with hot fluids.

•  Chemical Tank Farms – Used for loading/unloading of chemicals like solvents, acids, polymers between storage tanks and trucks/railcars. Provides reliable on/off control.

•  Food & Beverage – Used to regulate process and cleaning fluids with solid content in sugar processing, brewing, dairy, etc. Handles frequent cycling.