Lined flange pneumatic butterfly valve

Disc:CF8M,1.4462,CF8M FEP lined,CF8 EPDM lined
Body style: lug
Nominal diameter:2″ – 24″ (DN50mm – DN600mm)
Top flange:ISO5211
Operating pressure:16bar for DN50-DN200, 10bar for DN250-DN600
Flange accommodation:EN 1092 PN 6/PN10/PN16,ASME Class 150,JIS 5K/10K


    Lined flanged butterfly valve

    The Lined Flange Pneumatic Butterfly Valve, a cutting-edge solution for precise and secure flow control in aggressive environments. This advanced valve is designed with a sturdy stainless steel body that is fully lined with a high-quality, chemically resistant material to safeguard against corrosive substances like acids, alkalis, and other aggressive chemicals. The disc is also lined, ensuring compatibility with a wide range of applications. The pneumatic actuator delivers fast, accurate, and efficient control of the valve’s position, making it ideal for high-pressure and high-temperature systems. The triple-offset design guarantees a bubble-tight seal while reducing friction between the disc and seal, ultimately extending the lined butterfly valve service life. Featuring easy installation and low maintenance requirements, the Lined pfa Butterfly Valve is an excellent choice for industries such as chemical processing, water treatment, pharmaceuticals, and more, where dependable flow control and corrosion resistance are critical. Experience unparalleled performance, durability, and reliability even in the most demanding conditions with this innovative valve.

    Lined butterfly valves is split body designed for a wide variety of liners such as PTFE, EPDM, NBR, FPM, PU to fit a wide range of applications.

    PTFE is the preferred material for corrosive applications in chemical industry.
    PU is the preferred material for abrasive applications.
    EPDM is the preferred rubber for water industries.
    NBR is the preferred rubber for oil transportation.
    FPM is the preferred rubber for wide range of medium composition and temperature.
    Lug design makes the valve convenient for disassembling between flanges and work well for dead end service with short length in pipe line.


    • ISO5211 direct mounting pad for easy automation
    • Isolation height according to plant prescription
    • Dirtscraper prevents moisture penetrating into the shaft area
    • Three PTFE impregnated SS316L bearings are provided for precision alignment of the disc-shaft
    • 3 layers sealing system ensures environment protection
    • PTFE seat and rubber seat version interchangeable each other• PTFE-liner for chemically toxic and highly corrosive media, rubber liner for various of industry applications
    • Silicon rubber energized back behind PTFE seat makes the sealing between liner and disc stable and offer a wide range of temperature
    • One-piece disc-shaft design reduces the valve torque and increases Kv
    • PTFE or rubber lined disc design option avoids high cost by expensive metal in corrosive applications
    • Bubble-tight shut of at full pressure rating
    • Can be disassembled, material-specific recycling possible
    • Wave shape flange face design ensures the flange sealing of seat face not damaged by flange pressing, also avoids shrink of seat inside diameter because of flange pressing

    Lined flange pneumatic butterfly valve


    No. Part name Material
    1 Body GGG40
    2 Disc/shaft one piece CF8M 1.4462 CF8M FEP lined CF8 EPDM lined
    4 Seat Energizer SR
    5 Weather seal NBR
    6 Bearing PTFE impregnated SS316L
    7 Gland PTFE
    8 Screw SS304
    9 Belleville washer SS304
    10 Stuffing collar SS316
    11 O ring FPM
    12 V ring PTFE


    Body style Lug
    Nominal diameter 2″ – 24″ (DN50mm – DN600mm)
    Top flange ISO5211
    Operating pressure 16bar for DN50-DN200, 10bar for DN250-DN600
    Temperature range -20 °C to + 180 °C (depending on pressure, medium and material)
    Flange accommodation EN 1092 PN 6/PN10/PN16
    ASME Class 150
    AS 4087 PN10/ PN16
    JIS 5K/10K
    Operation Hand lever, gear box, pneumatic actuator, electric actuator


    Lined lug butterfly valve size

    SIZE A B C D D1 E F d G H L WT(kg)
    50 2″ 126 65 13.5 117 147 11 50 8 65 25 43 2
    65 2 1/2″ 138 79 13.5 131 161 11 50 8 65 59 46 3
    80 3″ 138 79 13.5 176 206 11 50 8 65 59 46 3
    100 4″ 167 97 17.5 206 236 14 70 10 90 86 52 5
    125 5″ 180 129 17.5 236 272 14 70 10 90 112 56 7
    150 6″ 203 142 18.5 258 294 17 70 10 90 140 56 8
    200 8″ 228 172 18.5 321 363 17 102 12 125 191 60 13
    250 10″ 266 213 24.5 395 437 22 102 12 125 241 58 22
    300 12″ 291 242 24.5 461 509 22 102 12 125 290 78 31
    350 14″ 332 262 30 511 571 27 125 14 150 331 78 44
    400 16″ 363 303.5 30 580 640 27 125 14 150 377 102 64
    450 18″ 397 324.5 39 630 702 36 140 18 175 425 114 86
    500 20″ 425 357 39 700 772 36 140 18 175 474 127 116
    600 24″ 498 419 49 823 913 46 165 22 210 570 154 179


    What is a Lined ptfe butterfly valve?

    A lined PTFE Butterfly Valve is a type of control valve that works by using a circular disc to regulate the flow of fluids or gases. It is designed with two semicircular plates, which are joined together at their centers by an axis and separated from each other when in the open position. When rotated 90 degrees, the plates cover and uncover ports on either side of the valve allowing for full or partial shut off.

    The lining in these valves is made up of PTFE (Polytetrafluoroethylene). This material has some very important features that make it ideal for certain applications like this one. It’s chemically inert, resistant to corrosion and abrasion, non-flammable, temperature resistant up to 500 F (260 C), low friction surface coating as well as an excellent electrical insulator. All these characteristics allow this type of butterfly valve to be used in both industrial and commercial settings where there are strict requirements regarding fire safety regulations since they can withstand temperatures much higher than other materials while still providing reliable performance without risk of heating up nearby environments or breaking down.

    What is a Lined ptfe butterfly valve used for?

    A Lined PTFE Butterfly Valve is a specialized valve designed to provide quick and reliable shutoff of corrosive and abrasive fluids. It’s mainly used for a wide variety of industrial applications such as the chemical, pharmaceutical, food processing, petrochemical and sewage treatment industries.

    It contains a lined body with which the liner material is bonded under high-temperature so that it can withstand various corrosive chemicals like sulfuric acid, phosphoric acid, nitric acid etc. The valve is also able to withstand harsh temperatures ranging from -300F to +400°F without deteriorating over time. This ensures that it remains corrosion resistant even in highly corrosive environments.

    How do I choose a Lined ptfe butterfly valve?

    Choosing the right lined ptfe butterfly valve for your project can be a difficult task if you don’t know the important parameters to consider. Here are some key points to help select the best valve for your needs:

    Temperature Range: You should make sure that the selected butterfly valve is capable of working within your expected temperature range. The maximum operating temperature must be considered and the desired liner material chosen accordingly to ensure compatibility with any applied media or environment.

    Pressure Rating: It is important to choose a valve with an appropriate pressure rating for safe operation. The nominal pressure classes available in lined ptfe butterfly valves vary, so it’s essential to choose one which will match your requirements and application conditions perfectly.

    3 Body Materials: Different materials provide different levels of durability over time, so make sure you choose wisely based on what kind of environment it will be exposed to (e.g., corrosive service areas). Typical body materials include Cast Iron, Ductile Iron, Stainless Steel, PVC/CPVC and PTFE-lined Ductile Iron depending on size and application requirements

    4 Connection Type: Connections types such as Lugged or Wafer style connection options may reduce installation costs as no additional flanges are needed in many cases when hub ends are used in lieu of welded connections or other means requiring extra piping components.. Make sure these connection types meet all applicable standards including ASME B1634 & AWWA C504 standards..

    5 Flow control capabilities – Lined ptfe butterfly valves can come with various flow control capabilities such as manual handwheels, gear operators and even electric actuators depending upon process needs.. Make sure any accessories used also meet quality criteria such as NEMA 4X rating if located outdoors etc…

    6 Testing Criteria – Last but not least its always recommended that all valves (especially those handling critical applications), come with third party testing certificates verifying all safety ratings such ASTM/ASME/AWWA standards have been met by manufacturer for best results during field installations & operations…

    In conclusion choosing the correct lined PTFE Butterfly Valve depends upon understanding your specific process requirements involving temperatures ranges , pressure classifications ,Body materials ,connection styles & flow capabilities … Doing adequate research & factoring in above mentioned parameters would ensure success while selecting suitable model…

    What are Lined valve pneumatic actuators?

    Valve pneumatic actuator are devices designed for automated control of a valve’s linear, thrust-based motion. They use pressurized air to provide the driving force for their operation and can be found in industries such as aerospace, petrochemical, oil & gas processing, and manufacturing.

    Pneumatic actuators are typically categorized either by single-acting or double-acting models based on whether they generate a pushing or pulling action when activated. Single acting models offer a simple design that utilizes compressed air from one side only to open or close the valve while double acting models allow more control over the flow and requires compressed air from both sides to move the valve stem. Single-acting actuators are available in direct drive designs which allow for direct connection of the pneumatic device to the stem without any additional equipment required.

    Valve pneumatic actuators are known for their durability as well as their ability to be remotely operated with ease compared with manual operation of valves. This makes them an ideal solution when it comes to automation systems due to their easy installation procedure and large operating range capabilities which enables them to control multiple types of valves throughout different applications reliably with minimal maintenance costs required. In addition, they are capable of providing precise torque output thanks in part due internal components such as pistons which has made them particularly popular in the manufacturing industry where accuracy is essential – allowing manufacturers complete control over production processes.

    Lined pfa butterfly valve PN10 Flange size chart