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Double Flange Butterfly Valve EPDM Seat
Concentric Flange Butterfly Valve

Double Flange Butterfly Valve EPDM Seat

Type: Concentric Resilient Seated

Series: D41X

Size: DN40-DN2000/2”-80”

Pressure rating: PN6/PN10/PN16/5K/10K/150LB

Design standard: EN 593

Service: OEM&ODM

Soft sealed flange butterfly valve is connected to the pipeline through bolts, used to control the on/off and flow regulation of fluids.

    Valve Type:

    Flange butterfly valve

    Structure:

    Concentric

    Standard:

    EN593

    Workmanship:

    Investment casting

    Sealing direction:

    Bidirectional

    Sealing grade:

    Zero leakage

    Temperature:

    -20°C<T<120°C

    Operation:

    Handle/Lever

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    ① Thick shell, heavy-type

    ② High purity rubber, high wear resistance

    ③ Zero leakage standard

    ④ Various size in stock

    Characteristics

    Flanged butterfly valves distinguish themselves as a highly versatile fluid control solution, uniting cutting-edge structural design, exceptional operational efficiency, and uncompromising reliability across countless industrial scenarios. Their unique design fuses the key advantages of flanged end connections robust installation and high-pressure capability with the natural benefits of butterfly valve mechanics, including space-saving compactness and swift quarter-turn operation, making them a top choice for diverse industry needs.

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    Advantages

    1. Simple structure, low cost:

    Few components, simple processing and assembly technology, and simple structure means easy to understand and maintain.

    2. Excellent bidirectional sealing performance (soft seal):

    Under low pressure and normal temperature conditions, soft seals can achieve excellent sealing effects, and the leakage level can usually reach zero leakage (ANSI Class VI).

    3. Extremely low flow resistance and high flow capacity:

    The thickness of the butterfly plate is the only obstacle in the medium flow channel when the valve is fully opened, and it causes very little pressure drop on the medium. The advantages are obvious in systems that require maintaining smooth pipelines and reducing pumping energy consumption. Suitable for high flow applications, especially in water treatment, air conditioning water systems, water supply and drainage, and other high flow scenarios.

    4. Small size, light weight, easy installation:

    Compact design, compared to gate valves or globe valves of the same caliber, has a shorter structural length and much lighter weight.

    Packing

    Standard export wooden case packaging

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    Application Scenarios

    Flanged butterfly valves are universally acclaimed for their compact configuration, lightweight construction, and cost-efficiency, solidifying their position as a preferred fluid control solution across diverse industrial sectors. The flanged end connections facilitate secure, leak-free installation through bolted fixation to compatible flanges, ensuring consistent and reliable performance across both low and high-pressure operating conditions.

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    Material

    Body

    Plate

    Rotating Shaft

    Bushing

    Seat

    Operating Temperature

    (℃)

    Material Name

    Electroplated Nodular Cast Iron

    Material Name

    Material Name

    Material Name

    Ductile Iron

    Ductile Iron

    Stainless Steel

    PTFE

    EPDM Rubber

    -45~+135  Short-time -50~+150

    Ductile Iron

    Stainless Steel

    Carbon Steel

    PTFE

    Hypalon

    -18~+135  Short-time -18~+149

    Aluminum Bronze

    Titanium Steel

    EPDM Rubber

    -45~+135  Short-time -50~+150

    Stainless Steel

    CF8M Stainless Steel

    Neoprene Rubber

    -7~+93 Short-time

    -7~+107

    CF8M Stainless Steel

    Carbon Steel

    NBR Rubber

    -12~82 Short-time

     -12~+93

    Carbon Steel

    CF8M Stainless Steel

    Abrasion-Resistant Rubber

    -10~+50

    Fluororubber

    -23~+150

    Heat-Resistant EPDM Rubber

    -20~+150

    PTFE

    +10~+150

    Dimension

    dimension

    DN

    L

    L1

    D

    D1

    H

    H1

    b

    n-φd

    mm

    inch

     

     

    PN1.0MPa

    PN1.6MPa

     

     

     

     

    PN1.0MPa

    PN1.6MPa

    50 2" 108 180 125 125 150 326 83 20 4-φ18 4-φ18
    65 21/2" 112 180 145 145 165 344 93 20 4-φ18 4-φ18
    80 3" 114 180 160 160 200 363 100 22 4-φ18 8-φ18
    100 4" 127 180 180 180 220 396 114 22 8-φ18 8-φ18
    125 5" 140 180 210 210 250 421 125 24 8-φ18 8-φ18
    150 6" 140 180 240 240 280 453 143 24 8-φ23 8-φ23
    200 8" 152 270 295 295 335 578 170 26 8-φ23 12-φ23
    250 10" 165 270 350 355 405 638 198 26 12-φ23 12-φ28
    300 12" 178 380 400 410 455 731 223 32 12-φ23 12-φ28
    350 14" 190 380 460 470 525 783 270 36 16-φ23 16-φ28
    400 16" 216 450 515 525 580 888 300 38 16-φ28 16-φ31
    450 18" 222 480 565 585 640 958 340 40 20-φ28 20-φ31
    500 20" 229 480 620 650 705 1005 355 42 20-φ28 20-φ34
    600 24" 267 480 725 770 825 1128 410 48 20-φ30 20-φ36
    700 28" 292 640 840 840 920 1476 478 53 24-φ30 24-φ36
    800 32" 318 640 950 950 1020 1533 525 58 24-φ33 24-φ39
    900 36" 330 750 1050 1050 1120 1655 585 65 28-φ33 28-φ39
    1000 40" 410 850 1160 1170 1340 1765 640 76 28-φ36 28-φ42
    1200 48" 470 850 1380 1390 1560 1995 755 85 32-φ39 32-φ48
    1400 56" 530 1000 1590 1590 1760 2310 910 103 36-φ42 36-φ48
    1600 64" 600 1000 1820 1820 1970 2595 1030 123 40-φ48 40-φ56
    1800 72" 697 1100 2020 2020 2180 2810 1140 135 44-φ48 44-φ56
    2000 80" 760 1100 2230 2230 2345 3100 1250 145 48-φ48 48-φ62

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