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  • China · Xinhui Valve Co., Ltd.

    Phone: 0577-57760066 57760077
    Fax: 0577-57760099
    Website: http://ozarkdirt.com
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    Address: Xiaojingyu Industrial Zone, Qiaoxia Town, Yongjia County, Zhejiang Province
    Electric explosion-proof butterfly valve
    Electric explosion-proof butterfly valve

    Electric explosion-proof butterfly valve (D943H / F, D973H / F)

    Product overview of electric explosion-proof butterfly valve :

    Electric explosion-proof butterfly valve is composed of high-quality sealed butterfly valve and high-precision electric actuator. The structure types of electric explosion-proof butterfly valve are: triple eccentric structure and single eccentric structure, and the sealing forms are: metal seal and soft seal structure. There are two types of electric explosion-proof butterfly valve connection: flange type and wafer type. PTFE seal butterfly valve can be used in the temperature below 150 degrees, and three eccentric hard seal valve body can be used in high temperature conditions.


    Product features of electric explosion-proof butterfly valve


    1. Novel design, reasonable, unique structure, light weight, quick opening and closing.
    2. The operating torque is small, the operation is convenient, and the effort is dexterous.
    3. It can be installed in any position and convenient for maintenance.
    4. The seals can be replaced, and the sealing performance is reliable to achieve zero leakage in two-way seals.
    5. The sealing material is resistant to aging, corrosion and long service life.


    Main design standards of electric explosion-proof butterfly valve :


    design standards GB / T2238-1989
    Flange connection size GB / T9113.1-2000; GB / T9115.1-2000; JB78
    Structure length GB / T12221-1989
    Stress test GB / T13927-2000; JB / T9092-1999


    Fourth, the main technical parameters of electric explosion-proof butterfly valve actuator


    input signal 4 ~ 20mADCc 1-5VDC 220VAC switch contact signal
    Valve position output signal 4 ~ 20mADC, load resistance: ≤500Ω
    Resolution Higher than 1/200
    dead zone 0.4 ~ 1.2% adjustable
    Signal isolation Input signal, output signal, power supply three isolation
    Fault state Can be set to any position from 0-100% of full stroke
    Operating temperature -10 ~ 55 ℃
    Relative humidity ≤90% (non-condensing)
    Position conversion accuracy ± 0.5%
    Insulation resistance ≥100MΩ (500VDC.)
    Dielectric strength 2000VAC, 1 minute (input to output to power to ground)
    The unique electric brake circuit is adopted, so the positioning accuracy is high, the actuator is sensitive, the starting and stopping are rapid, and the operation is stable. At the same time, it has the characteristics of anti-interference, anti-surge voltage and strong anti-breakdown ability. It is suitable for the regulation circuit with frequent movements. When the connection duration is 25%, the number of movements per hour can reach 630-1200 times.


    V. Material of main parts of electric explosion-proof butterfly valve:


    Part Name material
    Valve body Ductile cast steel, cast steel, alloy steel, stainless steel
    Butterfly Gray cast iron, ductile cast steel, cast steel, stainless steel and special materials
    Sealing ring Various rubber, PTFE, stainless steel
    Valve stem 2Cr13, stainless steel
    filler O-ring, flexible graphite


    Six, the main performance specifications of electric explosion-proof butterfly valve


    Nominal diameter DN (mm) DN50 ~ 1200
    Nominal pressure PN (MPa) 0.6 1.0 1.6 2.5
    test pressure Strength test 0.9 1.5 2.4 3.75
    Seal test 0.66 1.1 1.76 2.75
    Low-pressure airtight test 0.5 ~ 0.7
    Applicable medium Air, water, sewage, steam, gas, oil, etc.

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