• W1, 2, 3
  • W4
  • W5, 6
  • W8
  • W9
  • WT
  • W
    Series Butterfly Valves

    W1, 2, 3 Light-load butterfly valves


    W1, 2, 3 series are of large capacity, light load, welded structure. Suitable for regulation of low pressure gas or liquid, high temperature styles are also available.

    W1 series adopt open type of butterfly plate; W2 series plate manufactured into an oval, when the valve is closed, the plate and valve body center plane form an angle of 10 degrees, forming a self-sealing structure; for W3 series, a set of symmetrical distributed back seat rings are used in valve body.

    QRM series diaphragm type and QRE series piston type quarter-turn actuator can be used with W series valve, and EMR series are electric actuator for these valve.



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    Type

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    Body, Disc Concentric

    W1: Flat type; W2: Elliptic;W3: Seat type

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    Size


    DN80~DN3200 / 3"~128"

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    Pressure rating


    PN0.1~1.6

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    Temperature range


    -29~800℃

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    Body material


    20#, 304, 316

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    Leakage class


    W1: 2%×Cv; W2, W3: 0.5%×Cv 

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    Cv


    155~580000

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    Features


    W1 series  opening structure;

    W2 self-sealing structure;

    W3  flat sealing face structure.

  • W
    Series Butterfly Valves

    W4 Vane type butterfly valves


    W4 series valve, simple structure, light weight, small flow resistance. Single axis, double axis and multi axis, circular, rectangular products are available. They can be pneumatic and electric operated.Typical application: air flow control of ventilation and dust removal and environmental protection for power station, metallurgy, mine.



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    Type

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    One-vane type, multi-vane type

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    Size


    Diagonal 80~1600 / Diagonal 3”~64”

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    Pressure rating


    PN0.1~1.6

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    Temperature range


    -29~800℃

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    Body material


    20#, 304, 316

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    Leakage class


    2%×Cv 

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    Cv


    125~167300 

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    Application


    Typical applications are flow/pressure controls of low-pressure air and gas.Hight temperature fluid at low pressure levels can also be accommodated inexpensively and easily.

  • W
    Series Butterfly Valves

    W5, 6 Middle-load butterfly valves


    W5, 6 series are of large capacity, medium load valve. Suitable for regulation of medium pressure gas or liquid, high temperature styles are also available.

    W5 series adopt open type of butterfly plate; for W6 series, a set of symmetrical distributed back seat rings are used in valve body.

    QRM series diaphragm type and QRE series piston type quarter-turn actuator can be used with W series valve, and EMR series are electric actuator for these valve.



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    Type

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    Body, Disc Concentric

    W5: Flat type; W6: Seat type

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    Size


    DN80~DN1600 / 3"~64"

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    Pressure rating


    PN1~1.6

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    Temperature range


    -29~650℃ 

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    Body material


    WCB, CF8, CF8M, CF3M

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    Leakage class


    W5: 2%×Cv,  W6: 0.5%×Cv

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    Cv


    155~148400

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    Features


    W5 series opening structure,

    W6 flat sealing face structure.

  • W
    Series Butterfly Valves

    W8 High performance butterfly valves


    Double eccentric construction, reduced seat friction, improved durability of the valve. They possess high performance of the regulation and shut off.Wafer type connection.

    QRZ and QRE series piston type quarter-turn actuator can be used with W8 series valve, and EMR series are electric actuator for these valve.

    When combined with quick exhaust valves and other accessories, fast stroke time of 1S, 2S, 3S and 4S can be reached.Bonnet extension type are also available.



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    Type

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    Double eccentric

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    Size


    DN80~DN1600 / 3"~64"

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    Pressure rating


    PN1~10 / ANSI 150~600Lb

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    Temperature range


    -196~650℃ (250℃)

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    Body material


    WCB, CF8, CF8M, CF3M, Ti, C-276, 2205

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    Leakage class


    ANSI Ⅳ, Ⅴ or Ⅵ

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    Cv


    120~143360

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    Features


    Ball sealing surface asuure the best sealing preformance.

  • W
    Series Butterfly Valves

    W9 Flange butterfly valves


    Double eccentric construction, reduced seat friction, improved durability of the valve. They possess high performance of the regulation and shut off.Flange type connection.

    QRM and QRE series piston type quarter-turn actuator can be used with W9 series valve, and EMR series are electric actuator for these valve.



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    Type

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    Double-eccentric

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    Size


    DN80~DN1600 / 3"~64"

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    Pressure rating


    PN1~10 / ANSI 150~600Lb

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    Temperature range


    -196~650℃ (250℃)

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    Body material


    WCB, CF8, CF8M, CF3M, Ti, C-276, 2205

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    Leakage class


    ANSI Ⅳ, Ⅴ or Ⅵ

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    Cv


    120~143360

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    Features


    Ball sealing surface asuure the best sealing preformance.

  • W
    Series Butterfly Valves

    WT Three-eccentric butterfly valves


    WT series features "oblique elliptical disc radial dynamic balance seal system", Non-rubbing seating, metal to metal seal.

    QRM and QRE series piston type quarter-turn actuator can be used with W9 series valve, and EMR series are electric actuator for these valve.



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    Type






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    Three-eccentric

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    Size


    DN80~DN2800 / 3"~112"

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    Pressure rating


    PN1~26 /ANSI 150~1500Lb

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    Temperature range


    -196~650℃ (250℃)

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    Body material


    WCB, CF8, CF8M, CF3M,

    Ti, C-276, 2205

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    Leakage class


    ANSI Ⅳ, Ⅴ or Ⅵ, bidirectional seal or according to API 598 standard

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    Cv


    120~439040

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    Features


    Elimainating seat-seal friction on unseating cavitation and noise reducers are available to complement the valve under high pressure drop process situation.