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U type butterfly valve EPDM seal short series flange butterfly valve
U type

U type butterfly valve EPDM seal short series flange butterfly valve

Type:Concentric Resilient Seated

Series:UD41X

Size: DN40-DN2000/2”-80”

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

Design standard: EN/DIN/API

Service: OEM&ODM

The U-section Butterfly Valve is a short structure, high-strength flange butterfly valve with a "U" - shaped valve body that combines the thinness of a clamp valve with the stability of a flange valve. It is commonly used in medium and low pressure water supply and drainage, HVAC, and general industrial pipelines.

    Valve Type:

    Concentric butterfly valve

    Structure:

    Concentric

    Standard:

    EN/DIN/API

    Workmanship:

    Investment casting

    Sealing direction:

    Bidirectional

    Sealing grade:

    Zero leakage

    Temperature:

    -20°C<T<120°C

    Operation:

    Handle/Lever

    图片1

    Characteristics

    This U-type flange butterfly valve features an integrated U-shaped valve body with high rigidity and deformation resistance. Equipped with integral flanges on both ends, it ensures firm pipeline connection and excellent vibration resistance. With a compact overall length, it saves installation space effectively. The valve operates via 90-degree rotary movement, requiring low operating torque and enabling fast opening and closing. Its simplified structure also facilitates easy on-site assembly and routine maintenance.

    图片2

    Advantages

    1.Structural and installation advantages

    The GGG40 U type valve body is designed with an integrated U-shaped design, which has strong rigidity and is not easily deformed. The overall size is small and lightweight, greatly saving installation space. Equipped with flanges at both ends, the pipeline is firmly connected and has good seismic resistance. Compared with traditional flange butterfly valves, it is easier to install and suitable for various pipeline layouts.

    2.Circulation and usage advantages

    Adopting a 90 ° rotary opening and closing, with low operating torque and fast switching speed; Smooth flow channels, low flow resistance, and high medium transport efficiency. The bf U type can be paired with various driving modes such as manual, worm gear, pneumatic, electric, etc., to meet the needs of manual control and automation working conditions, and is widely applicable in various scenarios.

    3.Sealing and operation advantages

    There are two types of structures: soft seal and hard seal. Soft seal achieves zero leakage, while hard seal is resistant to high temperature, erosion, and wear. The overall components are streamlined, with stable operation and low failure rate. Daily maintenance and upkeep are convenient, and long-term usage costs are lower.

    Packing

    Standard export wooden case packaging

    screenshot_2026-04-02_15-23-10

    Application Scenarios

    This U type double flange butterfly valve is widely used in municipal water supply and drainage, fire protection systems, building HVAC and cooling water pipelines. It also serves general industries like chemical, papermaking and food processing.

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    Material

     
    Body

     
    Disc

     
    Stem

     
    Bushing

     
    Seat


    Name


    Code


    Name


    Code


    Name


    Name


    Name


    Code


    Working temp


    Cast iron

    Z

    Plated ductile iron

    B1

    Stainless steel

    Carbon steel

    Lubrized bronze

    PTFE

    NR

    X1

    -20~+85℃


    Ductile iron

    Q


    Aluminum bronze

    B2

    Hypalon

    X2

    -23~+121℃


    Aluminum bronze

    T

    ZG1Cr18Ni9Ti
    Stainless steel

    B3


    EPDM

    X3

    -23~+121℃

    ZG1Cr13Ni9Ti
    Stainless steel

    P


    Titanium steel

    B4


    Neoprene

    X4

    -7~+93℃

    CF8M
    Stainless steel

    R

    CF8M
    Stainless steel

    B5


    NBR

    X5

    -23~+100℃


    Carbon steel

    C


    Carbon steel

    B6


    Wear-resistant rubber

    X6

    -10~+100℃

    CF8
    Stainless steel

     

    CF8
    Stainless steel

    B7


    VITON

    X7

    -23~+200℃

     

     

     

     


    Hear-resistant rubber

    X9

    -23~+135℃

     

     

     

     


    PTFE

    F4

    +10~+150℃

    Dimension

    Dimension

    Specification

    A

    B

    C

    ΦD

    ΦE

    ΦG

    f

    H

    J

    ΦK

    L

    n-Φ1

    Φ2

    α

    mm

    inch

    100

    4

    200

    114

    52.07

    104

    70

    13

    55

    25.97

    90.03

    90

    28

    4-10

    15.77

    45

    125

    5

    213

    127

    55.5

    123.3

    70

    13

    55

    33.9

    110.1

    90

    28

    4-10

    18.92

    45

    150

    6

    226

    139

    55.75

    155.6

    70

    13

    55

    49.93

    145.27

    90

    28

    4-10

    18.92

    45

    200

    8

    260

    175

    60.58

    202.5

    102

    13

    70

    70.96

    193.23

    125

    45

    4-12

    22.1

    45

    250

    10

    292

    203

    68

    250.5

    102

    13

    70

    91.25

    241

    125

    45

    4-12

    28.45

    45

    300

    12

    337

    242

    76.9

    301.6

    102

    20

    70

    112.35

    291.63

    125

    45

    4-12

    31.6

    45

    350

    14

    368

    267

    76.17

    333.3

    125

    20

    85

    128.57

    324.48

    150

    45

    4-14

    31.6

    45

    400

    16

    400

    309

    85.7

    389.6

    140

    20

    100

    151.95

    380

    175

    51

    4-18

    33.15

    45

    450

    18

    422

    328

    104.6

    440.51

    140

    20

    100

    167.96

    427.91

    175

    51

    4-18

    38

    45

    500

    20

    480

    361

    130.28

    491.6

    140

    20

    100

    180.66

    474

    175

    57

    4-18

    41.15

    45

    600

    24

    562

    459

    151.36

    592.5

    165

    22

    130

    220.57

    572.84

    210

    72

    4-22

    50.65

    45

    700

    28

    624

    520

    163

    695

    254

    30

    200

    266

    675.62

    300

    82

    8-18

    63.35

    22.5

    800

    32

    672

    591

    188

    794.7

    254

    30

    200

    303.35

    772.14

    300

    82

    8-18

    63.35

    22.5

    900

    36

    720

    656

    203

    864.7

    254

    30

    200

    330.85

    840.53

    300

    110

    8-18

    75

    22.5

    1000

    40

    800

    721

    216

    965

    254

    30

    200

    374.5

    940.52

    300

    142

    8-18

    85

    22.5

    1200

    48

    940

    864

    254

    1160

    298

    34

    230

    453

    1131

    350

    150

    8-22

    105

    22.5

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