Flanged butterfly valve

Body:   ASTM A536 65-45-12, WCB, CF8M
Bonded with NBR or EPDM
Disc:  ASTM A536 65-45-12 Nylon coated, CF8, CF8M, 2507, 1.4462
Stem:  SS420,SS431
Body style:   Flange
Nominal diameter:   2″ – 88″ (DN50mm – DN2000mm)
Top flange:  ISO5211
Operating pressure:  16bar for DN50-DN300, 10bar for DN350-DN2200







    Category: Butterfly valve

    Description

    Flange butterfly valve

    Flanged Butterfly Valve, the ultimate solution for all your fluid regulation needs! This powerful butterfly valve boasts a double flange design that can withstand even the toughest conditions, making it perfect for heavy industry, shipbuilding, and other harsh vacuum applications. Whether you’re in need of a fly valve for potable water, water treatment, or wastewater, our product has got you covered.

    We understand the importance of safety in industrial and manufacturing environments, which is why our valve comes equipped with a stem anti-blowout design. This added feature ensures safety during use and gives you peace of mind knowing that the valve will not fail under high pressure. But that’s not all – our valve also comes with an ISO5211 top flange, making it easy to attach an actuator and allowing for seamless integration into your existing systems.

    Flange Butterfly Valve delivers on both fronts. With the ability to be installed in any desired position and a single flange mounting, you can customize its placement to suit your specific needs. Plus, our valve offers bubble-tight shut off at full pressure rating, ensuring precise and accurate regulation every time.

    FEATURES

    1. ISO5211 top flange and heat-resistant stem allow for easy actuator mounting
    2. Stem anti-blowout design ensures safety during field use
    3. Bonded seat prevents contact between body, shaft, and medium
    4. Secure stem-to-disc connection without exposed pins or bolts
    5. Single flange installation option available
    6. Versatile installation in any desired position
    7. Provides bubble-tight shut off at full pressure rating
    8. High flow capacity and exceptional strength for optimal performance

    PARTS LIST AND MATERIAL SPECIFICATION

    NO. Part name Material
    1 Body ASTM A536 65-45-12, WCB, CF8M
    Bonded with NBR or EPDM
    2 Disc ASTM A536 65-45-12 Nylon coated, CF8, CF8M, 2507, 1.4462
    3 Stem SS420,SS431
    4 Screw SS304
    5 Retainer SS201
    6 Weather seal NBR
    7 Bearing RPTFE with Graphite on I.D.
    8 Lower Stem SS420, SS431
    9 Bottom cover Same as body
    10 Bolt SS304
    11 Screw SS304

    TECHNICAL DATA

    Body style Flange
    Nominal diameter 2″ – 88″ (DN50mm – DN2000mm)
    Top flange ISO5211
    Operating pressure 16bar for DN50-DN300, 10bar for DN350-DN2200
    Temperature range -20 °C to + 140 °C (depending on pressure, medium and material)
    Flange accommodation EN 1092 PN 6/PN10/PN16
    ASME Class 150AS 4087
    PN10/ PN16JIS 5K/10K
    Applications Potable Water, Wastewater, Seawater, HVAC
    Operation Hand lever, gear box, pneumatic actuator, electric actuator

    SIZE A B C D E F n d G J L WT(kg)
    DN INCH
    50 2″ 142 80 13.5 165 9 50 4 8 70 15 108 9
    65 2 1/2″ 155 89 13.5 185 9 50 4 8 70 15 112 10
    80 3″ 161 95 13.5 200 9 50 4 8 70 17 114 12
    100 4″ 180 114 13.5 229 11 70 4 10 90 17 127 16
    125 5″ 193 127 17.5 254 14 70 4 10 90 19 140 24
    150 6″ 205 139 17.5 285 14 70 4 10 90 19 140 29
    200 8″ 250 175 24.5 343 17 102 4 12 125 21 152 39
    250 10″ 282 203 25 406 22 102 4 12 125 23 165 60
    300 12″ 326 242 25 483 22 102 4 12 125 24 178 82
    350 14″ 358 267 30 533 27 125 4 14 150 24 190 108
    400 16″ 380 301 30 597 27 125 4 14 150 28 216 145
    450 18″ 422 381 39 640 36 140 4 18 175 33 222 183
    500 20″ 479 387 39 710 36 140 4 18 175 40 229 230
    600 24″ 562 457 49 840 46 165 4 22 210 40 267 303
    700 28″ 560 465 95 910 63.35 254 8 18 300 40 292 410
    750 30″ 610 508 95 984 63.35 254 8 18 300 43 308 552
    800 32″ 620 519 95 1025 63.35 254 8 18 300 43 318 610
    900 36″ 692 576 130 1125 75 254 8 18 300 46 330 750
    1000 40″ 735 640 130 1255 85 254 8 22 300 50 410 945
    1100 44″ 813 735 150 1355 85 254 8 22 300 53 450 1120
    1200 48″ 917 783 150 1485 105 298 8 22 350 57 470 1350
    1400 56″ 1000 925 200 1685 120 356 8 32 415 60 530 1700
    1500 60″ 1050 950 200 1820 140 356 8 32 415 78 570 2000
    1600 64″ 1150 1045 200 1930 140 356 8 32 415 65 600 2500
    1800 72″ 1260 1156 280 2130 160 406 8 40 475 70 670 3500
    2000 80″ 1363 1350 280 2345 160 406 8 40 475 75 760 4000
    2200 88″ 1500 1430 300 2555 180 483 12 40 560 85 636 4500

    FAQs

    What is a flanged butterfly valve?

    A flanged butterfly valve is a quarter-turn rotational motion valve used to regulate the flow of liquids and gases. It consists of a disc or vane that can be rotated inside the body of the valve in order to open, close, or partially obstruct it. The main advantages of using a flanged butterfly valve are: ease of maintenance and installation (valve changes require no special tools), compact design (the valves take up very little space compared to other types), affordability, durability, bubble tight shutoff (when closed properly), and low pressure drop across the valves.

    Flanged butterfly valves have two main components – the body assembly and the disk assembly. The body of these valves often comes with an external thread for mounting purposes. A built-in flange on both ends ensure secure connection between two pipes by utilizing studs, nuts, gaskets, etc. Moreover there are various sizes for different applications from small bore sizes such as 1/2″ to 4″, medium bore size ranging from 4″ – 12″, and large bore sizes ranging from 14” up to 24″ which are mostly used in industry applications like water treatment plants or power plants where heavy pressure is required .

    flanged butterfly valve

    What is the difference between a lug and flanged butterfly valve?

    The main difference between a lug and flanged butterfly valve is in the way they are attached or mounted to the piping system. A lug-style butterfly valve uses a single unit that includes wings (lugs) which protrude from either side of the body, allowing it to be secured directly to mounting lugs on the pipe or fitting (e.g., weld neck flange). On the other hand, flanged butterfly valves use bolts and/or gaskets and fasteners for attachment purposes, allowing them to be securely mounted onto an existing pipeline with a separate flange connection.

    Lug-style butterfly valves also feature holes which align with those of its mating component (usually by bolting), providing additional stability when compared to their flanged counterparts. Additionally, these style of valves provides faster installation time since no welding is necessary and can present cost savings due part avoidance from not having two purchase components separately. Conversely, one downside associated with this design is that if torque values exceed what was initially specified by manufacturer’s recommendations than leakage can occur between parts due lack interlocking features among them.

    What is a single flange butterfly valve?

    A single flange butterfly valve is a quarter-turn valve that features an exposed, single-piece body and disc design. This type of valve utilizes a mechanically-driven, circular disc that rotates to regulate the flow of the media within a piping system.

    Single flange butterfly valves are typically used in applications including commercial water treatment systems, industrial water distribution systems for process control, agricultural irrigation systems, and many other plumbing operations. They can also be found in chemical processing plants as well as hydroelectric power stations.

    One major benefit of using this type of valve is its ability to handle high flows with minimal pressure drop. The single piece body and disc design prevents unwanted material from entering the system via potential leak paths making it ideal for containing hazardous fluids or slurries at higher pressures than many competitive products. Additionally, since butterfly valves rotate only 90° to open or close—as opposed to traditional gate valves which need two turns—they offer faster operation resulting in improved energy efficiency and reduced maintenance costs over time.

    What is the difference between a wafer and flanged butterfly valve?

    When it comes to valves, there are a number of options available. Two main types includes wafer and flanged butterfly valves. Despite the similarities, the two valve types have some distinct differences that should be taken into consideration before selecting one for a particular application.

    The most prominent difference between wafer and flanged butterfly valves is their connection type. Wafer butterfly valves use lugs on the disc to fit between two pipe-ends or supports on either side while Flanged butterfly valve use bolts through machined holes in small steel rings, called “flanges”, which are screwed into the grooves of each pipe-end or support (leveraged with nuts). As such Flanges offer a much more secure connection no matter what form of material is used making them far more suitable for high pressure applications than those using lugged discs as found in wafer valves.