PTFE / PFA Lined Plug Valve

A PTFE / PFA lined Plug valve is a specialized flow control device designed to regulate the movement of fluids through pipelines, particularly in industries handling corrosive or high-purity substances. Typically constructed from materials like stainless steel or cast iron (BS 5158:1989) internally lined with Low Porosity PTFE / PFA to meet design Standards. This lining provides exceptional chemical resistance and a low friction coefficient, ensuring smooth operation and enhanced durability. The valve's core component, the plug, Comes with PTFE / Teflon and features a cylindrical or tapered shape with a transverse opening. Rotating the plug 90 degrees aligns or obstructs the flow passage, allowing for quick and efficient flow control.

The lining is applied using transfer molding, which guarantees a smooth, seamless finish and is securely locked into place using machined dovetail grooves. This innovative PTFE / PFA Lined Plug Valve design prevents liner collapse under vacuum conditions and blowouts under high-pressure and high-temperature environments, ensuring superior performance and durability. Additionally, Teflon’s low coefficient of friction reduces wear and tear, minimizing maintenance requirements and ensuring smooth operation. The design allows for accurate fluid flow control, essential in many industrial processes. Furthermore, they are easy to clean and maintain, making them ideal for industries with strict hygiene requirements.

One of the key features of PTFE Lined Plug Valve is its cavity-free design. Both the open and closed positions are designed to eliminate areas where particles can accumulate, preventing blockages and contamination. This makes the valve ideal for applications where corrosive slurries and aggressive media are handled. By ensuring reliable flow control in demanding applications, lined plug valves support sustainable industrial practices and help maintain the integrity of critical processes. Lined / Sleeved plug valves are available in various configurations & sizes, including Full Port Plug Valve, two-way (straight-through) and three-way designs, to accommodate different flow control of chemical processing, pharmaceuticals, and water treatment industry.

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Specifications

Features

Type: PTFE / PFA Lined Plug Valve

Design Standard: API 599, BS 5158, API 593, ASME B16.34

Body / Plug M.O.C.: Steel Fabrication (ASTM A234 Gr. WPB), Ductile Iron (GGG40.3 / ASTM A395), Cast Steel (ASTM A216 Gr. WCB), Stainless Steel (ASTM A312 TP304 / 316, SCH.-40)

Size Range: 15 mm to 200 mm

Nominal Pressure: P10/PN16, #150

Working Temperature: -29°C to 210°C

Face to Face: ANSI B16.10

Lining Thickness: 3 to 5 mm

Lining Material: PFA (ASTM D 3307), FEP (ASTM D 2116), PVDF (ASTM D 3322), PP (ASTM D 4101)

Seat Material: EPDM, PTFE, NBR, Viton

Coefficient Of Friction : 0.05 to 0.10

Leakage Class: ANSI/FCI 70-2 Class IV

Actuator Type: Pneumatic, Scotch Yoke, Rack & Pinion

Accessories: Positioners, Limit Switches, Handwheels

Certifications: CE, ATEX, SIL, ISO 9001, PED

Spark Test: 15 K.V.D.C

Conductivity: 0.20 to 0.6 W/mK

Operation Options: Manual, Pneumatic, Electric

  • Durable & High-Performance : Robust construction ensures long-lasting use and reliable performance in demanding applications.

  • Wide Compatibility : Available in various sizes and standard dimensions for easy integration into different systems.

  • Low Pressure Drop & Efficient Flow : Streamlined internal design reduces flow resistance, enhancing system efficiency.

  • High Temperature & Chemical Resistant : Engineered to handle extreme heat and aggressive fluids without compromising integrity.

  • Quick & Easy Installation : Standardized dimensions allow for fast, hassle-free setup and replacement.

  • Leak-Proof & Anti Blow-Out Safety : Advanced sealing and blow-out prevention design ensure safety and zero leakage.

  • Non-Abrasive & Contamination-Free : Smooth internal surfaces prevent wear and keep fluids clean—ideal for hygienic applications.

  • Automation-Ready : Supports pneumatic, electric, and hydraulic actuators for seamless automation.

  • Global Quality & Safety Compliance : Manufactured to meet international standards like ISO, CE, and ATEX.

  • Thermal & Static Protection : Low thermal conductivity and anti-static properties ensure safe and efficient operation.

Related Products

Types:  Lubricated Plug Valve

Mfg. Std.: API 6D

End Connection : Flanged, Threaded (BSP/NPT), Socket Weld, Butt Weld

Size: ½” to 24”

Class: 150# - 600#

Types:   Non-Lubricated Plug Valve

Mfg. Std.: API 6D, API 599, ASME B16.34, BS 5353

End Connection : Flanged, Threaded (BSP/NPT), Socket Weld, Butt Weld

Size: ½” to 24”

Class: 

FAQ’s

Have a question before you buy our products? Take a look at the FAQs below.
If you don’t find the answer you’re looking for, get in touch with us here.

  • What is a Lined Plug Valve, and why is it used in my industry?

    A Teflon Lined Plug Valve is designed with a PTFE, PFA, or FEP lining to protect against corrosion, abrasion, and chemical degradation. It is commonly used in industries handling aggressive, corrosive, or abrasive fluids to ensure longevity, leak-proof operation, and smooth flow control.

  • What are the benefits of using PTFE Plug Valves in chemical processing?

    These valves provide excellent chemical resistance, preventing valve failure due to the aggressive nature of acids, solvents, and other chemicals, ensuring safe and reliable operation in harsh environments.

  • Can PTFE Plug Valves be used in food or pharmaceutical applications?

    Yes, these valves are suitable for industries like food, beverage, and pharmaceuticals, where they provide safe, contamination-free flow control in high-purity environments.

  • What is cavity-free design and how does it benefit me?

    The cavity-free design ensures there is no place for particles to accumulate, which prevents clogging or contamination. This feature is especially useful for handling slurries and viscous fluids.

  • How long does the PTFE lining last under harsh operating conditions?

    The lining thickness of 3 to 5 mm provides enhanced durability, extending the valve's life by protecting it from chemical corrosion, abrasion, and erosion in demanding environments.

  • What makes PTFE Lined Plug Valves more cost-effective than traditional valves?

    These valves offer excellent performance with a lower total cost of ownership due to their durability, reduced maintenance needs, and longer service life, making them a cost-effective solution for industries handling corrosive and abrasive fluids.

Industries where Bellow Sealed Globe Valve is Used

Food And Beverages
Oil Refineries
Wastewater Treatment
Pharmaceutical Industry
Chemical Manufacturing

Application

  • Corrosive Chemical Handling: Managing the flow of aggressive chemicals, ensuring safe and efficient processing.
  • High-Purity Fluid Control: Maintaining the purity of sensitive fluids by preventing contamination during transfer.
  • Treatment Chemical Regulation: Controlling the dosage and flow of chemicals used in various treatment processes.
  • Aggressive Agent Management: Handling the flow of strong agents used in various industrial processes.
  • Abrasive Slurry Control: Regulating the movement of abrasive mixtures in processing operations.
  • Ultra-Pure Chemical Handling: Controlling the flow of ultra-pure and corrosive chemicals in specialized manufacturing processes.
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