Lined Valve

Product Overview

KFEL Lined Ball Valves are engineered for handling highly corrosive and aggressive media in chemical, pharmaceutical, petrochemical, and process industries. Designed with advanced PFA, FEP, or PVDF lining technology, these valves provide superior corrosion resistance, bubble-tight shut-off, low operating torque, and extended service life under demanding operating conditions.

Key Features

Advanced Corrosion Protection

• Valve body, stem, and internal wetted components lined with PFA, FEP, or PVDF.

• Ball fully encapsulated in PFA/FEP for maximum chemical resistance.

• Optional ceramic ball design available for specialized applications.

Reliable Sealing Performance

• Free-floating ball design ensures positive sealing against the downstream seat, even at low line pressures.

• Bubble-tight shut-off with minimal pressure drop.

Anti-Blowout Stem Design

• Safety stem assembly prevents stem ejection, even during maintenance or actuator removal.

Anti-Static Protection

• Equipped with anti-static devices to safely dissipate electrostatic charges during operation.

Compact Installation

• Short face-to-face dimensions conforming to ANSI B16.10 and ANSI B16.5 (Class 150).

• Ideal for replacing existing lined or sleeved plug valves without pipework modification.

Easy Operation

• Quarter-turn operation for quick opening and closing.

• Significantly lower operating torque compared to equivalent plug valves.

• Suitable for manual and automated actuation.

Leak-Tested Integrity

• Helium Leak Tested in accordance with ASME Section V, Article 10.

• Tested and verified by independent inspection agencies.

Construction Materials

Standard Body Materials

• Ductile Iron – ASTM A395 (60-40-18)

• Carbon Steel – ASTM A216 WCB

Optional Materials

• Stainless Steel Grades (Available on Request)

• Special Alloys for Critical Service Applications

Refer to the technical datasheet for detailed material specifications of individual components.

Advanced Lining Technology

KFEL utilizes a specialized in-house injection moulding process for PFA/FEP lining, ensuring superior quality and long-term reliability.

Benefits of the KFEL Lining Process

• Uniform lining thickness throughout the valve body.

• Zero residual stress within the lining material.

• Excellent liner-to-body bonding.

• Enhanced resistance to permeation and corrosion.

• Superior performance under high vacuum conditions.

• Improved dimensional accuracy and service life.

The advanced isothermal injection and transfer process ensures consistent lining quality and performance beyond conventional transfer-moulded lining methods.

Typical Applications

• Chemical Processing

• Petrochemical Plants

• Pharmaceutical Manufacturing

• Fertilizer Plants

• Specialty Chemical Industries

• Corrosive Fluid Handling Systems

• Water Treatment & Process Industries

Performance Benefits

• Excellent Chemical Resistance

• Bubble-Tight Shut-Off

• Low Operating Torque

• Anti-Static Safety Design

• High Vacuum Compatibility

• Long Service Life

• Easy Maintenance

• Reliable Leak-Free Performance