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Comprehensive Guide to China Electric Butterfly Valve Model

This post is a complete guide to tell you the model of China electric butterfly valves mean.
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    Electric butterfly valves are pivotal in the realm of industrial applications, offering a blend of automation, efficiency, and reliability. These valves, a combination of electric actuators and butterfly valves, are celebrated for their straightforward design, lightweight, longevity, easy installation, and maintenance. Furthermore, they present a cost-effective solution without compromising quality or performance. Given their extensive application across diverse conditions—ranging from high temperatures and pressures to corrosive environments and various fluids—it’s crucial to understand the nomenclature behind China’s electric butterfly valve models for accurate selection and usage.

    china electric butterfly valves
    china electric butterfly valves

    The Methodology Behind Electric Butterfly Valve Model

    The model designation system for electric butterfly valves in China is derived from national standards for valve selection, encompassing several key parameters:

    • Butteryfly Valve Code: D
    • Actuation Method: 9 – Electric Actuator
    • Connection Type: 4 – Flange Type, 6 – Welding, 7 – Wafer Type
    • Structural Design: 1 – Center Line Structure, 2 – Double Eccentric, 3 – Triple Eccentric
    • Seat/Sealing Material: H – Stainless Steel, W – Valve Body Processing, Y – Alloy, X – Rubber, J – Rubber Lining
    • Nominal Pressure: 10 – 10Bars, 10K – Japanese Standard, 150LB – American Standard
    • Valve Body Material: Z – Gray Iron, Q – Ductile Iron QT450, C – Carbon Steel WCB, P – Stainless Steel 304, R – Stainless Steel 316, I – Chromium Molybdenum Steel WC6/WC9
    • Nominal Diameter: DN40-2200mm, 2”-60”

    These parameters, except for temperature and medium, are reflected in the model, please kindly specifying the operating medium and temperature during selection.

    china electric butterfly valve
    china electric butterfly valve

    Key Selection Criteria China Electric Butterfly Valve

    Actuator Types

    • Switch Type
    • Modulating Type
    • Intelligent Type
    • Explosion-Proof Type

    Valve Body Materials

    Body Material CodeMaterial TypeApplications
    QT450Ductile IronWater, sewage, liquid applications
    WCBCarbon SteelOil, steam, gas applications
    F46Lined with FluorineAcidic, corrosive gases and liquids
    304/316Stainless SteelWeakly corrosive gases, liquids, high-temperature, high-pressure environments

    Seat Material Suitability by Temperature and Pressure

    CodeMaterialTemperature Range
    JRubber Lined≤80°C
    XEPDM Rubber≤120°C
    HStainless Steel≤425°C
    IChrome Moly Steel≤590°C
    2520Stainless Steel≤1000°C

    Model Examples For China Electric Butterfly Valve

    D971X-10Q-DN50-Electric Wafer Butterfly Valve

    D represents butterfly valve, 9 represents electric, 7 represents wafer type, 1 represents center line structure, X represents rubber sealing ring, 10 represents nominal pressure, Q represents ductile iron, DN50 represents valve inner diameter

    D943H-16C-DN100-Electric Hard Seal Butterfly Valve

    D represents butterfly valve, 9 represents electric, 4 represents flange type, 3 represents triple eccentric, H represents stainless steel, 16 represents nominal pressure, C represents carbon steel, DN100 represents valve inner diameter

    china electric butterfly valve 1

    Accessories and Additional Codes

    Butterfly valve accessories and additional features enhance functionality:

    • B – Insulation
    • H – Check function
    • S – With expansion
    • TL – Desulfurization
    • G – High temperature

    Electric Butterfly Valve Models Overview

    The diverse range of electric butterfly valve models caters to various applications:

    Soft-Sealed Electric Butterfly Valves

    • D971X
    • D971F
    • D971J

    Hard-Sealed Electric Butterfly Valves

    • D973H
    • D973W
    • D973F
    • D973Y

    Specialized Electric Butterfly Valves

    • For Expansion: SD941X, SD943H, SD943W
    • Explosion-Proof: BD943H, BD973H, BD941X, BD971X
    • Lined with Fluorine: D941F46, 971F4, BD941F46, B971F4
    • For Ventilation: D941W


    Above the complete model description of China electric butterfly valve, THINKTANK engineers have meticulously organized models such as electric regulating butterfly valves, explosion-proof electric butterfly valves, electric soft-sealed butterfly valves, and electric hard-sealed butterfly valves for efficient selection. Should you have any questions, just feel free to contact THINKTANK’s experts to help you sizing or selection the right electric butterfly valves for your application.

    Complete list of electric butterfly valve models

    • Electric wafer-type soft seal butterfly valve model: D971X, D971F, D971J
    • Electric flange type soft seal butterfly valve model: D941X, D941F, D941J
    • Electric flange hard-sealed butterfly valve models: D973H, D973W, D973F, D973Y
    • Electric wafer-type hard-seal butterfly valve models: D943H, D943W, D943F, D943Y
    • Electric telescopic butterfly valve models: SD941X, SD943H, SD943W
    • Electric explosion-proof control valve models: BD943H, BD973H, BD941X, BD971X
    • Electric fluorine lined butterfly valve models: D941F46, 971F4, BD941F46, B971F4
    • Electric ventilation butterfly valve model: D941W
    Picture of Will Don

    Will Don

    After earning my bachelor's degree in mechanical engineering from Zhejiang Normal University in 2008, l was fortunate enough to begin my career with Siemens, Fisher, and YTC, focusing on control valve accessories. Over the past dozen years, l've poured my heart and energy into understanding technology and fluid solutions for control valves.
    Now, as the marketing director for THINKTANK, a trusted branch of the Taiwan STONE valve group, I can't help butf eel proud of how far we've come. Our knowledge isn't just reaching professionals like engineer and valve distributors; it's also inspiring the next generation of automation college students.
    l genuinely hope you're enjoying our articles and finding them helpful.Your thoughts, questions, and feedback mean the world to me, so please don't hesitate to reach out to marketing[at] Whether you're a seasoned expert or just curious about the field, I'm here to connect, share, and learn together.

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    I am the author of this article, and also the CEO and marketing director of THINKTANK, with 15 years of experience in the industrial valve industry. If you have any questions, you can contact me at any time.

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