Lined PTFE butterfly valve

Body:  GGG40
Disc:  CF8M,1.4462,CF8M FEP lined,CF8 EPDM lined
Body style:  wafer
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


    Category: Butterfly valve


    Lined PTFE butterfly valve

    Lined PTFE butterfly valve, a revolutionary product designed for a wide variety of applications. This split-body design is lined with an array of materials like PTFE, EPDM, NBR, FPM and PU to fit all of your needs. For corrosive applications in chemical industries, PTFE is the preferred material; EPDM for water industries; NBR for oil transportation; FPM for a wide range of medium composition and temperature. Not only is this wafer design convenient for connection between flanges and pipe lines, but its ISO5211 direct mounting pad allows for easy automation. The isolation height also meets all plant prescriptions while its dirt scraper prevents any moisture from penetrating into the shaft area. Furthermore, three layers sealing system ensures environment protection as well as three PTFE impregnated SS316L bearings provided for precision alignment of the disc-shaft. The PTFE seat and rubber seat versions are interchangeable so you can choose what works best for you – whether it’s chemically toxic or highly corrosive media or various industry applications. Additionally, the one-piece disc-shaft design reduces torque and increases Kv while Silicon rubber energized back behind the PTFE seat stabilizes sealing between liner and disc across a wide range of temperatures. Finally, to avoid high costs from expensive metal in corrosive applications, we offer both PTFE and rubber lined valve disc designs. Get yours today!

    Lined wafer butterfly valve 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.
    Wafer design makes the valve convenient for connection between flanges and save 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


    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 wafer
    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


    SIZE A B C D E F d G H L WT(kg)
    50 2″ 126 65 13.5 116 11 50 8 65 25 43 2
    65 2 1/2″ 138 79 13.5 136 11 50 8 65 59 46 3
    80 3″ 138 79 13.5 136 11 50 8 65 59 46 3
    100 4″ 167 97 17.5 170 14 70 10 90 86 52 5
    125 5″ 180 129 17.5 196 14 70 10 90 112 56 7
    150 6″ 203 142 18.5 227 17 70 10 90 140 56 8
    200 8″ 228 172 18.5 279 17 102 12 125 191 60 13
    250 10″ 266 213 24.5 336 22 102 12 125 241 58 22
    300 12″ 291 242 24.5 392 22 102 12 125 290 78 31
    350 14″ 332 262 30 445 27 125 14 150 331 78 44
    400 16″ 363 303.5 30 503 27 125 14 150 377 102 64
    450 18″ 397 324.5 39 553 36 140 18 175 425 114 86
    500 20″ 425 357 39 608 36 140 18 175 474 127 116
    600 24″ 498 419 49 717 46 165 22 210 570 154 179


    What is lined butterfly valve?

    A lined butterfly valve is a type of control valve that uses a rotatable disc to control the flow rate of a process. It is often used in pipeline applications as it provides superior performance and longevity compared to other valves. The primary feature that makes it unique among other valves is its internal lining, which can be made of several materials such as rubber, polytetrafluoroethylene (PTFE), teflon, and even glass.

    The lined butterfly valve is composed of four main components: an actuator, stem nut or locking collar, bushing and disc. The actuator may be manual or automated with electric or pneumatic controls; the stem nut works like any regular nut stitch – tightening and loosening the closure element; the bushing helps hold the disc in place while also providing tension for secure sealing between the valve body flange faces; finally, dierent discs are available depending on application requirements such as pressure rating or rangeability characteristics.

    What are ball valves and butterfly valves?

    Ball valves and butterfly valves are two different types of valve used around the world for many industrial, commercial, and residential applications.

    Ball valves are quarter-turn shut off valves that use a spherical closure element with a circular flow path to control water or air flow. The ball has a bore in it with an internal cavity allowing passage when the valve is open. When the valve is closed, the sphere rotates so that its bore lines up with the valve body’s inlet and outlet ports preventing passage through. Ball valves are typically constructed from metal, although plastic versions may exist as well depending on their intended usage. Because they offer tight sealing capabilities at relatively low levels of torque, they’re commonly used in systems such as heating or cooling pipelines and plumbing networks.

    Butterfly valves have rotary closure elements in an eccentric circle pattern that provide regulated movement between open and closed positions via an actuator handle mounted outside of their bodies. Unlike ball valves which can only be opened or closed completely, butterfly valves allow for finite adjustments within both positions enabling precise regulation of pressure or flows required by processes needing more delicate management than what could be provided by ball valves alone. Due to their slender construction relative to other types of control systems available today – including much higher disks-to-seal area ratios – butterfly values boast increased weight savings while also providing exceptional throttling characteristics across broad ranges of size requirements all while consuming minimal space during installation no matter what application they’re incorporated into!

    Why should I choose butterfly valves?

    Butterfly valves are a fast and efficient type of valve used to adjust the flow of fluids or air in different types of systems. They offer many advantages that make them an attractive choice for consistent and reliable operation, including:

    1) Easy Installation: Butterfly valves have easy installation due to their design, making them a very practical choice for most applications. This reduces labor costs associated with installing the valves, as they don’t need a lot of time and effort to install them properly.

    2) Low Maintenance Costs: Butterfly valves require minimal maintenance compared with other types of valves. As a result, you can save money on upkeep by using butterfly valves since you won’t need to keep replacing parts over time or perform complex repairs.

    3) Compact Size: Butterfly valves are small in size but provide many great features, making them perfect for confined spaces where bigger valve types do not fit efficiently. This way, you can maximize the use of tight spaces without compromising performance or safety standards.

    4) Durability & Reliability: Butterfly valves are highly durable and reliable due to their construction which typically uses reinforced rubber seals and stainless steel materials for long-term usage without any problems at all times. This ensures cost savings over time through reduced downtime from replacement needs as well as better overall efficiency from your system’s operations due to less worrying about leaks or inconsistent pressures flowing through the lines it controls (as other valve types often suffer from).

    Overall, butterfly valves provide exceptional performance along with benefits related to cost savings over other valve options – making it an ideal solution when seeking control over liquids/air pressure within any given system!

    What is the difference between PTFE and EPDM valves?

    The difference between PTFE and EPDM valves is a key factor in choosing the appropriate valve type for a particular application. PTFE (Polytetrafluoroethylene) is a soft engineering plastic with excellent chemical resistance, electrical insulation, low friction coefficients, and high temperature capabilities. It is known for its non-stick properties and used in the manufacture of items such as gaskets, seals, liners, films and more.

    On the other hand, EPDM (Ethylene Propylene Diene Monomer) rubber has superior weather resistance characteristics including ozone resistance; it also has good aging stability while retaining elasticity when used against oil products or acidic environments. It can be used at temperatures that range from -40°F to 300°F (-40°C to 149°C). The combination of these features make EPDM rubber an ideal material choice for outdoor applications as well as usage dealing with oils or acids like automotive hoses or brake components.

    What is PTFE butterfly valve?

    PTFE (Polytetrafluoroethylene) butterfly valves are a type of quarter-turn rotary valve designed to enable quick, easy and efficient control over the flow of a liquid or gas. They use a circular disc as their closing element and employ an externally mounted actuator for regulating the media. The construction of the valve is simple, which makes them cost-effective and highly reliable.

    These valves have two main components: the body and disc/shaft assembly, with PTFE used in both parts. The body material provides excellent chemical resistance, strong mechanical stability when exposed to heat and intense pressure, preventing particles from entering into contact with sensitive surfaces thereby significantly enhancing safety levels during operation. Furthermore, its low coefficient of friction enables it to be used in demanding applications such as oil refining processes without compromising on performance—hence its growing popularity amongst industries that insist on product integrity via precise control over gases or liquids while protecting valuable equipment.