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Floating Ball Valve


A lined ball valve is a type of valve that has a lining material on the inner surfaces of its body and ball. This lining is typically made of materials such as PTFE (polytetrafluoroethylene) or similar fluoropolymers.


Floating Ball Valve - Lined
Size Range

1/2 – 12 NPS, DN15 - DN300

Body Materials

ASTM A216, A105, A350, A182, A351, A352, A890, A995.

Temperature Range

-29°C to 450°C

Ball Materials

ASTM A216, A105, A350, A182, A351, A352, A890, A995.

Maximum Allowable Operating Pressure

ANSI 150#, ANSI 300#, ANSI 600# , ANSI 900#

Seat Materials

PTFE, NYLON, PEEK, NBR, KELF, ENP (Electroless nickel plating), HC (Hard chrome).

Shutoff Rating

Bidirectional Bubble-tight

Body Style

Flanged End, Butt Weld, FE V/s BW

Design Standard

ISO 17292, API 6D, ASME 16.34

Flange Drilling

ASME B16.5

Testing Standard

API 598, ISO 5208, EN 12266-1

Face To Face

ASME B16.10


Pneumatic Actuator, Electrical Actuator


Oil & Gas, Wastewater, Seawater, Petrochemicals, Chemicals,Sugar, Paper

  1. Corrosion Resistance: The primary advantage of a lined ball valve is its resistance to corrosion, particularly in aggressive chemical environments. The lining protects the valve body and ball from chemical attack, ensuring longevity and reliability.

  2. Smooth Flow: The smooth surface of the lining helps maintain smooth fluid flow, reducing turbulence and pressure drop across the valve.

  3. Chemical Compatibility: Lined ball valves are suitable for handling a wide range of corrosive fluids and gases, including acids, bases, solvents, and other aggressive chemicals.

  4. Temperature Resistance: The lining material is chosen for its ability to withstand a range of temperatures, making lined ball valves suitable for both cryogenic applications and high-temperature processes.

  5. Biocompatibility: In industries such as pharmaceuticals and food processing, where cleanliness and hygiene are critical, lined ball valves are used because the lining material is non-toxic and inert.

  6. Versatility: Lined ball valves are used in various industries, including chemical processing, oil and gas, water treatment, pulp and paper, and more, wherever corrosive fluids need to be controlled.

  7. Reduced Maintenance: The corrosion-resistant properties of the lining reduce the need for maintenance and replacement due to wear and degradation caused by chemical exposure.

  8. Cost-Effective: While typically more expensive than standard metal valves, lined ball valves are cost-effective in corrosive environments because they reduce downtime and replacement costs over their operational life.


  1. Smooth Operation and Tight Shut-Off: Lined ball valves typically provide smooth operation and tight shut-off. The lining material ensures low friction between the ball and the valve body, allowing for precise control of flow rates and minimizing leakage.

  2. Wide Temperature Range: The lining materials used in lined ball valves are selected for their ability to withstand a broad range of temperatures. This makes them suitable for both cryogenic applications and high-temperature processes.

  3. Longevity and Durability: Due to their corrosion resistance and robust construction, lined ball valves have a longer operational life compared to unprotected metal valves. They require less frequent replacement and maintenance, reducing downtime and overall costs.

  4. Environmental Safety: By preventing leaks and ensuring reliable fluid control, lined ball valves contribute to environmental safety and regulatory compliance in industries where hazardous chemicals are handled.


There are two main configurations for four-way multiport ball valves:

    • L-port: This design has four ports arranged in an L-shape. The ball core has two passages that can connect adjacent ports, allowing two flow path options at a time (often with a central “off” position where all ports are blocked).
    • Double L-port: This design is similar to the L-port but with two sets of L-shaped ports on opposite sides of the valve body. This allows for four potential flow path combinations.
    • Flow control versatility: Control flow direction in multiple lines with one valve, simplifying control systems.
    • Reduced piping complexity: Replaces multiple two-way valves, leading to a more streamlined and space-saving piping layout.
    • Compact design: Smaller footprint compared to using multiple two-way valves.
    • Multiple flow path options: L-port and double L-port configurations offer flexibility in flow routing.
    • Leak-proof operation: Tight-seating design minimizes leakage, crucial for critical applications.
    • Cost-effective: While the initial cost might be slightly higher than multiple two-way valves, they offer long-term value through simplified installation, reduced maintenance needs, and smaller space requirements.

Lined butterfly valves offer excellent chemical resistance, durability, minimal maintenance, and long service life compared to traditional valves.

These valves are used in various industries for flow control:

    • Diverting flow: Selecting between supply and discharge lines.
    • Mixing and blending: Controlling flow paths between different fluids for mixing or blending purposes.
    • Instrument isolation: Isolating instruments for maintenance while maintaining flow in the main line.
    • Cylinder control in double-acting pneumatic systems: Directing compressed air flow to extend or retract a pneumatic cylinder.
    • Sample collection systems: Routing fluid samples to different analysis points.
    • Flow path configuration (L-port or double L-port): Choose based on the desired flow control needs.
    • Port size and material compatibility: Ensure compatibility with your piping system and the fluids being handled.
    • Pressure and temperature rating: Select a valve exceeding your application’s requirements.
    • Actuation type: Decide on manual, pneumatic, or electric actuation depending on automation needs.