Wafer high performance butterfly valve

Body:  ASTM A536 65-45-12, WCB, CF8M
Disc:  CF8,CF8M,CF3M
Seat:  RPTFE,SS316+RPTFE,SS316
Connection:  Wafer
Size:  3″-24″
Pressure:  Class150,Class300
Flange standard: ASME B16.5 Class150,Class300; EN1092 PN16, PN25, PN40


    Category: Butterfly valve


    High performance butterfly valve

    Wafer High Performance Butterfly Valve – a revolutionary valve solution designed to bring efficiency, durability, and cost-effectiveness to a myriad of fluid control applications. Rooted in sophisticated engineering, this valve stands out for its ability to provide a bubble-tight shut-off, aligning with the highest standards required across a wide range of industries.

    Our unique design integrates a flexible-lip sealing system within a compact and lightweight body. This not only makes it a breeze to operate but also ensures a reliable, bubble-tight shut-off, essential for maintaining system integrity.

    Engineered to serve a diverse spectrum of fields, this valve is the perfect solution for Airport Refueling, Hydrocarbon Processing, HVAC systems, Air Treatment, Chemical Processing, Purified Gas handling, Steam and Vacuum Services, and much more. Its adaptability makes it a go-to choice for professionals seeking a universal valve solution.

    The ingeniously crafted wafer design facilitates effortless connection between flanges, significantly saving pipeline length. This feature is particularly beneficial in setups where space is at a premium, offering simplicity without sacrificing performance.

    Highlighting a one-piece stem design coupled with an ISO 5211 square drive, our butterfly valve has been crafted with the user in mind. Adjustments and maintenance are straightforward even with the actuator mounted, ensuring minimal downtime and increased productivity.

    Enhanced Sealing and Safety: Equipped with Belleville washers and a retaining ring, our valve ensures primary sealing between the shaft and packing is maintained, alongside providing blowout proofing. The option of RPTFE chevron soft seat or Graphite chevron fire-safe/metallic seat coupled with an extended neck for pipe insulation ascertains reliability and effectiveness across various operational conditions.

    Enhanced Valve Design Features:

    • Streamlined one-piece stem design with ISO 5211 square drive
    • Convenient direct mounting flange on valve body
    • Easy-access gland packing adjustment with actuator in place
    • Reliable primary sealing with Belleville washers on gland nut
    • Retaining ring for secure packing pressure and stem protection
    • Enhanced sealing options: RPTFE chevron for soft seat, Graphite chevron for fire safe and metallic seat
    • Extended neck for insulation compatibility
    • Pin-less shaft connection for easy maintenance and corrosion resistance
    • Seat retainer for simple seat replacement
    • Double offset disc reduces valve torque
    • Hardened alloy disc surface for extended sealing life
    • Integral disc stop to prevent over travel
    • Interchangeable soft, fire safe, and metallic seats
    • PTFE lined SS316 bearing for increased service life
    • Thrust ring for anti-blowout and anti-static protection


    No. Part name Material
    1 Body WCB CF8M
    2 Disc CF8* CF8M*
    3 Seat RPTFE,SS316+RPTFE,SS316
    4 Shaft 17-4 PHSS,1.4462
    5 Packing gland CF8
    6 Bottom cover Same as body
    7 Cover seal Graphite
    8 Thrust washer SS316
    9 Seat retainer WCB CF8M
    10 Gasket RPTFE, Graphite
    11 Retaining ring SS304
    12 Packing RPTFE, Graphite
    13 Packing ring SS316
    14 Bearing SS316+PTFE
    15 Thrust bearing SS316
    16 Key SS316
    17 Bolt SS316
    18 Bolt SS304
    19 Bolt SS304
    20 Nut SS304
    21 Belleville washer SS304
    *Supersonic spray welding of different materials on sealing surface of metal seating valve according to requirements


    Connection Wafer
    Size 3″-24″
    Pressure Class150,Class300
    Flange standard ASME B16.5 Class150,Class300; EN1092 PN16, PN25, PN40
    Face to face API 609 Category B valve Wafer
    Pressure test API 598
    Temperature PTFE seat -29°C to +200°C,metal seat -29°C to +400°C
    Operator Lever,Gear box,Pneumatic actuator,Electric actuator


    CLASS 150LB

    SIZE A B C D E Top Flange G L WT(kg)
    DN INCH Class150
    50 2″ 126 79 13.5 92 11 F05 45 43 3
    65 2 1/2″ 126 87 13.5 105 11 F05 45 46 4
    80 3″ 145 100 17.5 130 11 F07 72 48 5
    100 4″ 170 124 17.5 157 14 F07 91 54 6
    125 5″ 185 144 17.5 186 14 F07 114 57 9
    150 6″ 203 150 18.5 216 17 F10 145 57 12
    200 8″ 239 186 24.5 269 22 F10 192 64 19
    250 10″ 275 226 24.5 324 22 F10 240 71 33
    300 12″ 307 251 30 380 27 F12 285 81 42
    350 14″ 337 294 30 416 27 F12 328 92 61
    400 16″ 368 320 30 476 27 F14 373 102 88
    450 18″ 406 341 39 534 36 F16 422 114 135
    500 20″ 442 383 49 588 46 F16 470 127 173
    600 24″ 493 442 49 692 46 F25 570 154 272

    CLASS 300LB

    SIZE A B C D E Top Flange G L WT(kg)
    DN INCH Class300
    50 2″ 126 79 13.5 92 11 F05 45 43 3
    65 2 1/2″ 126 87 13.5 105 11 F05 45 46 4
    80 3″ 145 100 17.5 130 11 F07 72 48 5
    100 4″ 170 124 17.5 157 14 F07 91 54 6
    125 5″ 185 144 17.5 186 14 F07 114 57 9
    150 6″ 203 150 18.5 216 17 F10 145 57 12
    200 8″ 257 204 24.5 269 22 F10 192 73 23
    250 10″ 288 238 30 324 27 F12 240 83 39
    300 12″ 330 268 30 380 27 F12 285 92 55
    350 14″ 337 294 39 416 36 F14 320 117 79
    400 16″ 368 320 49 476 46 F16 363 133 103
    450 18″ 406 341 49 534 46 F16 400 149 170
    500 20″ 442 383 49 588 46 F25 450 159 225
    600 24″ 500 442 58 692 55 F25 550 181 338


    What is a high performance or double offset butterfly valve?

    A high performance or double offset butterfly valve is a type of control flow device used to regulate the flow of materials within industrial systems. The valve combines a disc-shaped shutter with an oblique (offset) pivot axis, allowing for greater accuracy and efficiency in fluid control than other valves.

    The double offset butterfly valve creates a leak-proof seal when closed, thanks to its unique design which features two seats that are independently pressed against the disc edge from opposite directions. This reduces the risk of leakage and prevents water hammering by eliminating any sudden pressure drops or increases caused by slamming shut. When open, this type of valve produces less turbulence than traditional gate style designs, allowing for smoother material passage through narrow pipelines or channels without excessive wear on surfaces.

    Applications for high performance or double offset butterfly valves range from wastewater treatment plants to nuclear power plants and specialty chemical production processes due to their ability to handle corrosive liquids with superior reliability and precision while ensuring tighter shutoff capabilities than competing technologies can offer. Additionally, these valves require minimal energy consumption compared to globe/angle valves making them ideal for use in locations where space is limited such as offshore platforms or underground tunnels where versatility is essential in achieving desired pressure regulation needs.

    What are ball valves and butterfly valves?

    Ball valves and butterfly valves are both types of piping valve, used to control the flow of liquids or gases in pipes. They both operate by opening and closing a pathway for the fluid.

    Ball valves consist of a round ball-shaped body with a hole in its center, which can be rotated 90 degrees between an open position (allowing full flow) and closed position (blocking off flow). Depending on their design, they may also have two additional positions: one allowing just enough passage for pressure equalization, and another partial open setting allowing reduced flow when necessary. Ball valves are most often found at points where frequent activation is not required but regular inspection must occur – primarily because any manual regulating actions require removing the valve from its seat or replacing the entire unit.

    Butterfly valves employ flat discs that rotate within a pipeline in-line to reduce or restrict airflow by varying amounts depending on rotation angle. Butterfly Valves can be opened up to allow higher flows through pipelines than ball valves by employing conical seats instead of linear ones, thus creating acceleration of fluids passing over them; however they lack as much control as ball valves due to their limited shutoff characteristics. Butterfly Valves usually come equipped with actuators which enable remote operation via electric signals or other means such as hydraulic pressure changes within pipelines themselves. Compared to Ball Valves, Butterfly Valves cost less upfront but require more maintenance over time due to mechanical wear they incur while in use.

    Both types of valve are suitable for different situations involving various control requirements and media conditions, so it is important to consult experts before making decisions related specifically to your needs when selecting either type for industrial applications ranging from food processing equipment lines all the way through gas distribution networks!

    Why should I choose butterfly valves?

    Butterfly valves are widely used in many industries due to their versatility, ease of installation, affordability, and reliable performance. Butterfly valves are usually smaller and lighter than other types of valves so they can be used where space is limited. They also have tight shutoff capabilities which make them ideal for isolating or regulating flow in a system.

    Butterfly valves operate by rotating a disc-shaped element within the valve body that restricts or permits flow depending on the position of the disc relative to an opening passing through the valve body itself. Because butterfly valves are only required to rotate 90 degrees from open to closed position they require less torque than some other types of process control elements making them easy to install and maintain because fewer parts need to be replaced during service life cycles.

    The lower friction created between their components provides an effective seal with no seat wear allowing for reduced maintenance costs over time since sealing surfaces do not come into contact once it has been set up correctly at installation time. The cost associated with installing a butterfly valve is significantly lower when compared with other control devices as well due over its lightweight construction and wide variety of size options available for selection based on specific requirements like pressure ratings, temperatures range limits etc..

    In addition, most butterfly vales don’t require external power source or compressed air supply as it only needs relatively low actuation torque supplied by manual operators such as levers or gears which makes them suitable for applications where automation isn’t necessary. Lastly, these versatile valves can be found in two different models such as resilient seated (rubber coated) models and metal seated ones offering superior leak tight shut off capabilities when compared with others alternatives available on market today so you can rest assured your process line will remain secure without interruption despite changes in your operating conditions

    What is a double eccentric butterfly valve?

    A double eccentric butterfly valve is a type of quarter-turn rotary disc valve designed to control the flow of liquids and gases. This particular valve stands out from its other counterparts as it features two separate axes of rotation for the disc or butterfly element. The primary axis is in the center, while a secondary offset axis causes a slight displacement when the valve is opened or closed.

    This unique design has several benefits, such as providing fast opening and closing times, reducing wear and tear on the seats, allowing for tighter shutoff capabilities than traditional designs, improved metering performance due to its low turbulence characteristics, virtually eliminating all throttling losses when in full open position, and having extremely low installation costs due to their compact size and weight.

    The double eccentric butterfly valves consist of three main parts – body castings (covering/housing), stem shafts (turnable discs), and thrust bearings (connecting elements) that are connected by special screws. When rotated from outside using actuators like gears or electric motors via stem shafts inside the housing connection ring, discs with offset axis open up widely at both ends within few seconds giving an immediate full-flow condition with minimal pressure loses across it which makes these valves ideal for controlling high flow rates applications such as water treatment works systems where precise adjustment isn’t required but quick switchover time is essential..

    These valves are suitable for food processing industries where they provide contamination free operation over long service life thanks to their non sticky action feature along with superior sealing ability against any kind of leakage preventing health threats ensuring stability throughout process operations management systems too. Furthermore these types of valves also offer flexibility by allowing engineers to use them in tight spaced places thus making them perfect companion during heavy online maintenance activities consequently helping businesses reduce lifetime cost expenses significantly leading towards increased profitability levels & enhanced customer satisfaction ratings altogether!

    What is a high performance butterfly valve?

    A high performance butterfly valve is a type of valve that features a disc-shaped closing mechanism which rotates around the stem axis. This allows for quick and reliable shutoff in demanding applications such as oil refineries, chemical plants, power plants, water treatment facilities and more.

    High performance butterfly valves are designed to operate with minimal torque requirements for opening or closing the valve. This reduces wear on the components and increases the valves’ service life.

    An important feature of these valves is their bidirectional flow characteristic—fluid can be directed in either direction through the valve without any significant pressure drop or flow restriction. This makes them an ideal choice in pipelines that carry fluid at relatively high speeds and require precise control over flow rate at both ends. Additionally, they provide fast shutoff capabilities even when there is fluctuating pressure or temperature changes within the line.