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Wafer Butterfly Valve with VITON/FKM/FPM Rubber Seat
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Wafer butterfly valve with FKM Seated.jpg
wafer butterfly valve seat type.jpg

Wafer Butterfly Valve with VITON/FKM/FPM Rubber Seat

The structure of the butterfly valve is simple, and it can be closed by rotating the valve stem 90 °. Wafer-style butterfly valve features a premium FKM seat, providing excellent chemical resistance to oils, aromatics, and acids, and can withstand temperatures from -5°C to +150°C. Constructed with ductile iron body and stainless steel disc (with full ductile iron option).

Butterfly valves are designed for bi-directional shut-off in PN10/16/150LB systems. Available in sizes DN50 to DN300, it can be operated manually or fitted with pneumatic/electric actuation.

TIANJIN KEFA VALVE manufacture concentric wafer butterfly valve with a focus on the critical sealing component. The FKM seat is precision-molded and installed in our facility, ensuring compatibility with high temperatures and a wide spectrum of corrosive media, offering reliable performance in refinery, chemical, and high-temperature hot water systems.

As the manufacturer, we control the specification and installation of the FKM seat. Each valve undergoes hydrostatic seat testing under relevant temperature simulation to ensure seal integrity before it leaves our factory.

Series: KF-TD-B

Type: Concentric Soft seated Seated

Size: DN50-300mm, NPS 2"-12"

Design Standard: EN 593, API 609

Pressure Rating: PN10/PN16/150LB

Certificate: ISO, CE, WRAS, ACS

Sample: Available

Service: OEM & ODM

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    Features
    Specifications
    Dimension

    Features

    Seat Type

    Backless and Replaceable

    Operation Cycles

    Over 100,000 times

    Leakage Level

    Bubbles-tight sealing with no leakage

    Low Torque

    Operation easy and flexible

    Bidirectional Sealing

    Any installation position

    Low Flow Resistance

    Improve fluid efficiency and reduce energy consumption

    Sealing Materials

    Rich variety over 5 types

    Coating Grade

    Conventional and special conditions of C1-C5 & CX

    Certificates

    ISO9001, CE, WRAS, ACS

    Specifications

    Design Standard

    EN 593 API 609

    Top Flange Standard

    ISO 5211

    End Flange Standard

    EN 1092 PN10/16, ANSI 125LB/150LB, JIS B2220 10K

    Face to Face Dimension

    API 609, EN558-1 Series 20, BS5155, DIN3202 K1

    Testing Standard

    API 598, EN12266

    Temperature

    -20℃~120℃ (depends on the sealing material)

    Body Material

    Ductile Iron

    Disc Material

    Stainless Steel, Duplex Stainless Steel, Monel

    Shaft Material

    Stainless Steel, Aluminum Bronze, Inconel

    Seat Materia

    VITON/FKM/FPM

    Operator

    Lever, Gearbox, Pneumatic, Electric Actuator

    Dimension

    Resilient Seated wafer butterfly valve

    Size

    D

    □T

    PN10

    PN16

    ANSI 150LB

    Top
    Flange

    Ф D 1

    n - Ф d

    Ф D 1

    n - Ф d

    Ф D 1

    n - Ф d

    DN50

    43

    9*9

    125

    4-19

    125

    4-19

    120.6

    4-19

    F05

    DN65

    46

    9*9

    145

    4-19

    145

    4-19

    139.7

    4-19

    F05

    DN80

    46

    9*9

    160

    4-19

    160

    4-19

    152.4

    4-19

    F05

    DN100

    52

    11*11

    180

    4-19

    180

    4-19

    190.5

    4-19

    F07

    DN125

    56

    14*14

    210

    4-19

    210

    4-19

    215.9

    4-22.4

    F07

    DN150

    56

    14*14

    240

    4-23

    240

    4-23

    241.3

    4-22.4

    F07

    DN200

    60

    17*17

    295

    4-23

    295

    4-23

    298.4

    4-22.4

    F10

    DN250

    68

    22*22

    350

    4-23

    355

    4-28

    361.9

    4-25.4

    F10

    DN300

    78

    22*22

    400

    4-23

    410

    4-28

    431.8

    4-25.4

    F10

    Product display

    Soft Back Seat Wafer Butterfly Valve

      When the temperature rises or aggressive chemicals are present, standard elastomers can fail. Engineered for performance at the limits, FKM (Fluorocarbon) rubber is formulated to maintain integrity and sealing force where EPDM and NBR cannot, ensuring reliability in your most demanding valve applications.
      When your process line handles hot oils, fuels, solvents, or aggressive chemicals, the seat material isn’t just a seal—it’s the valve’s first line of defense. Engineered for severe service, wafer butterfly valve features an FKM (Viton®-equivalent) rubber seat, providing superior resistance where standard EPDM or NBR elastomers would rapidly degrade.
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